I've been looking at the trunk and release branch, I've noticed that there are a lot of files that exist only in one or the other. My suspicion is that this is a result of work not getting merged to the release branch. The last day for "major code changes" for the 1.44 release is Monday, July 5th, Here's a list of what I found: Only in 'release/' boost/fusion/adapted/class/class_iterator.hpp boost/fusion/adapted/class/detail/at_impl.hpp boost/fusion/adapted/class/detail/at_key_impl.hpp boost/fusion/adapted/class/detail/begin_impl.hpp boost/fusion/adapted/class/detail/category_of_impl.hpp boost/fusion/adapted/class/detail/end_impl.hpp boost/fusion/adapted/class/detail/has_key_impl.hpp boost/fusion/adapted/class/detail/is_sequence_impl.hpp boost/fusion/adapted/class/detail/is_view_impl.hpp boost/fusion/adapted/class/detail/size_impl.hpp boost/fusion/adapted/class/detail/value_at_impl.hpp boost/fusion/adapted/class/detail/value_at_key_impl.hpp boost/fusion/adapted/class/extension.hpp boost/lambda/detail/control_structures_impl.hpp boost/numeric/ublas/tempfile.2.tmp boost/numeric/ublas/tempfile.3.tmp boost/numeric/ublas/tempfile.4.tmp boost/numeric/ublas/tempfile.tmp boost/smart_ptr/enable_shared_from_this2.hpp doc/test/accumulators.tag doc/test/dvips.version doc/test/gs.version doc/test/html/images/accumulators doc/test/latex.version libs/filesystem/doc libs/filesystem/example libs/filesystem/src libs/filesystem/test/convenience_test.cpp libs/filesystem/test/deprecated_test.cpp libs/filesystem/test/equivalent.cpp libs/filesystem/test/fstream_test.cpp libs/filesystem/test/large_file_support_test.cpp libs/filesystem/test/lpath.hpp libs/filesystem/test/msvc libs/filesystem/test/operations_test.cpp libs/filesystem/test/path_test.cpp libs/filesystem/test/wide_test.cpp libs/fusion/test/functional/make_unfused_generic.cpp libs/fusion/test/functional/make_unfused_lvalue_args.cpp libs/fusion/test/functional/make_unfused_rvalue_args.cpp libs/fusion/test/functional/unfused_generic.cpp libs/fusion/test/functional/unfused_lvalue_args.cpp libs/fusion/test/functional/unfused_rvalue_args.cpp libs/graph/example/kolmogorov-eg.cpp libs/graph/test/kolmogorov_max_flow_test.cpp libs/math/doc/html/standalone_HTML.manifest libs/range/doc/html/range/reference/adaptors/adaptors_reference.html libs/range/doc/reference/adaptors/adjacent_filtered.html libs/range/doc/reference/adaptors/copied.html libs/range/doc/reference/adaptors/filtered.html libs/range/doc/reference/adaptors/indexed.html libs/range/doc/reference/adaptors/indirected.html libs/range/doc/reference/adaptors/map_keys.html libs/range/doc/reference/adaptors/map_values.html libs/range/doc/reference/adaptors/replaced.html libs/range/doc/reference/adaptors/replaced_if.html libs/range/doc/reference/adaptors/reversed.html libs/range/doc/reference/adaptors/sliced.html libs/range/doc/reference/adaptors/strided.html libs/range/doc/reference/adaptors/tokenized.html libs/range/doc/reference/adaptors/transformed.html libs/range/doc/reference/adaptors/uniqued.html libs/test/example/cla/Jamfile libs/test/example/est_example1.cpp libs/test/example/est_example2.cpp libs/test/example/unit_test_example_011.cpp libs/test/example/unit_test_example_012.cpp libs/test/test/CMakeLists.txt Only in 'trunk/' boost/detail/extended_integer.hpp boost/filesystem/detail boost/filesystem/v2 boost/filesystem/v3 boost/fusion/algorithm/iteration/iter_fold.hpp boost/fusion/algorithm/iteration/reverse_fold.hpp boost/fusion/algorithm/iteration/reverse_iter_fold.hpp boost/fusion/include/iter_fold.hpp boost/fusion/include/reverse_fold.hpp boost/fusion/include/reverse_iter_fold.hpp boost/graph/boykov_kolmogorov_max_flow.hpp boost/graph/loop_erased_random_walk.hpp boost/graph/random_spanning_tree.hpp boost/io/detail boost/iterator/function_input_iterator.hpp boost/numeric/ublas/assignment.hpp boost/numeric/ublas/functional.hpp-0 boost/random/detail/operators.hpp boost/random/discrete_distribution.hpp boost/random/extreme_value_distribution.hpp boost/random/seed_seq.hpp boost/random/shuffle_order.hpp boost/random/weibull_distribution.hpp boost/serialization/item_version_type.hpp boost/signals2/detail/foreign_ptr.hpp boost/smart_ptr/enable_shared_from_raw.hpp boost/spirit/home/karma/detail/attributes.hpp boost/spirit/home/karma/detail/get_stricttag.hpp boost/spirit/home/karma/directive/strict_relaxed.hpp boost/spirit/home/karma/nonterminal/debug_handler.hpp boost/spirit/home/karma/nonterminal/debug_handler_state.hpp boost/spirit/home/karma/nonterminal/simple_trace.hpp boost/spirit/home/qi/detail/attributes.hpp boost/spirit/home/qi/nonterminal/debug_handler_state.hpp boost/spirit/include/karma_strict_relaxed.hpp boost/system/api_config.hpp boost/test/included/execution_monitor.hpp boost/test/prod_tools.hpp boost/test/utils/setcolor.hpp boost/type_traits/is_lvalue_reference.hpp boost/type_traits/is_rvalue_reference.hpp boost/typeof/unsupported.hpp libs/algorithm/string/test/find_format_test.cpp libs/exception/doc/source libs/filesystem/test/resize_file_test.txt libs/filesystem/test/xx libs/filesystem/v2 libs/filesystem/v3 libs/format/test/format_test_enum.cpp libs/fusion/test/algorithm/fold.hpp libs/fusion/test/algorithm/fold2.cpp libs/fusion/test/algorithm/iter_fold.cpp libs/fusion/test/algorithm/reverse_fold.cpp libs/fusion/test/algorithm/reverse_iter_fold.cpp libs/graph/doc/boykov_kolmogorov_max_flow.html libs/graph/doc/figs/bk_max_flow.gif libs/graph/doc/figs/warning.png libs/graph/example/boykov_kolmogorov-eg.cpp libs/graph/quickbook libs/graph/test/boykov_kolmogorov_max_flow_test.cpp libs/graph/test/random_spanning_tree_test.cpp libs/interprocess/proj/vc7ide/intermodule_singleton_test.vcproj libs/interprocess/test/intermodule_singleton_test.cpp libs/io/doc/quoted_manip.html libs/io/test/quoted_manip_test.cpp libs/iostreams/test/deprecated_file_descriptor_test.cpp libs/iostreams/test/detail/file_handle.hpp libs/iterator/doc/function_input_iterator.html libs/iterator/doc/function_input_iterator.rst libs/iterator/test/function_input_iterator_test.cpp libs/lambda/test/result_of_tests.cpp libs/multi_array/example/resize_from_other.cpp libs/multi_array/test/reverse_view.cpp libs/numeric/ublas/bench5 libs/numeric/ublas/doc/samples/assignment_examples.cpp libs/numeric/ublas/test/sparse_view_test.cpp libs/numeric/ublas/test/test_assignment.cpp libs/parameter/doc/README.txt libs/parameter/test/literate libs/ptr_container/test/const_element_containers.cpp libs/python/example/quickstart/bin libs/random/example/password.cpp libs/random/test/chi_squared_test.hpp libs/random/test/test_binomial.cpp libs/random/test/test_binomial_distribution.cpp libs/random/test/test_discrete.cpp libs/random/test/test_discrete_distribution.cpp libs/random/test/test_extreme_value.cpp libs/random/test/test_extreme_value_distribution.cpp libs/random/test/test_gamma.cpp libs/random/test/test_gamma_distribution.cpp libs/random/test/test_poisson.cpp libs/random/test/test_poisson_distribution.cpp libs/random/test/test_seed_seq.cpp libs/random/test/test_weibull.cpp libs/random/test/test_weibull_distribution.cpp libs/range/doc/html/range/reference/algorithms/range_algorithm_introduction.html libs/range/doc/html/range/reference/overview.html libs/range/test/algorithm_test/copy_n.cpp libs/range/test/algorithm_test/remove_copy.cpp libs/range/test/algorithm_test/remove_copy_if.cpp libs/range/test/algorithm_test/replace_copy.cpp libs/range/test/algorithm_test/replace_copy_if.cpp libs/range/test/algorithm_test/reverse_copy.cpp libs/range/test/algorithm_test/rotate_copy.cpp libs/range/test/algorithm_test/search_n.cpp libs/range/test/algorithm_test/swap_ranges.cpp libs/range/test/algorithm_test/unique_copy.cpp libs/range/test/replace_copy.cpp libs/serialization/test/test_diamond_complex.cpp libs/serialization/vc7ide/test_diamond_complex.vcproj libs/smart_ptr/test/enable_shared_from_raw_test.cpp libs/smart_ptr/test/make_shared_fp_test.cpp libs/spirit/doc/Missing.txt libs/spirit/doc/html/spirit/lex/reference/concepts libs/spirit/doc/html/spirit/what_s_new/spirit_2_4.html libs/spirit/example/scheme libs/spirit/test/karma/debug.cpp libs/spirit/test/karma/karma_optional_double.cpp libs/spirit/test/karma/semantic_action_attribute.cpp libs/spirit/test/lex/regression006.cpp libs/spirit/test/qi/attr_with_action.cpp libs/system/src/local_free_on_destruction.hpp libs/system/test/dynamic_link_test.cpp libs/system/test/throw_test.cpp libs/test/doc/Jamfile.v2 libs/test/doc/html/utf/user-guide/test-output/FPT.html libs/test/doc/src/Jamfile.v2 libs/test/doc/src/btl-toc.xml libs/test/doc/src/btl.xml libs/test/doc/src/execution-monitor.xml libs/test/doc/src/faq.xml libs/test/doc/src/minimal-testing.xml libs/test/doc/src/program-execution-monitor.xml libs/test/doc/src/snippet libs/test/doc/src/tutorial.hello-the-testing-world.xml libs/test/doc/src/tutorial.intro-in-testing.xml libs/test/doc/src/tutorial.new-year-resolution.xml libs/test/doc/src/utf.testing-tools.xml libs/test/doc/src/utf.tutorials.xml libs/test/doc/src/utf.usage-recommendations.xml libs/test/doc/src/utf.user-guide.runtime-config.xml libs/test/doc/src/utf.users-guide.fixture.xml libs/test/doc/src/utf.users-guide.test-organization.xml libs/test/doc/src/utf.users-guide.test-output.xml libs/test/doc/src/utf.users-guide.xml libs/test/doc/src/utf.xml libs/test/doc/src/xsl libs/test/doc/utf-boostbook.jam libs/test/example/test_example1.cpp libs/test/example/test_example2.cpp libs/test/example/unit_test_example_13.cpp libs/type_traits/doc/html/boost_typetraits/reference/is_lvalue_reference.html libs/type_traits/doc/html/boost_typetraits/reference/is_rvalue_reference.html libs/type_traits/doc/is_lvalue_reference.qbk libs/type_traits/doc/is_rvalue_reference.qbk libs/type_traits/test/is_lvalue_reference_test.cpp libs/type_traits/test/is_rvalue_reference_test.cpp libs/type_traits/test/tricky_rvalue_test.cpp libs/units/example/autoprefixes.cpp libs/utility/initialized_test.cpp libs/utility/initialized_test_fail1.cpp libs/utility/initialized_test_fail2.cpp libs/utility/value_init_workaround_test.cpp tools/boostbook/xsl/html-base.xsl tools/build/v2/test/exit_status.py tools/build/v2/tools/doxygen tools/build/v2/tools/xsltproc tools/release/merge2release.bat -- Marshall