Only the most important changes more recent than version 0.6 are noted here.
-Version 1.6.2 (BETA):
+Version 1.6.3-BETA:
+ Improved compatibility with version 3584 WIM / ESD files.
+
+ Performance improvements, including for extraction.
+
+ 'add' commands passed to wimupdate will now replace existing
+ nondirectory files by default. Use the --no-replace option to get the
+ old behavior.
+
+ Added support for "WIMBoot" capture and extraction. See the
+ documentation for the new '--wimboot' option to wimcapture and wimapply
+ for more information.
+
+ The format of UNIX data has been changed. If you captured any WIMs with
+ the --unix-data option, to upgrade them you'll need to apply them with
+ --unix-data using wimlib v1.6.2, then re-capture them with --unix-data
+ using this version.
+
+ Removed the --hardlink and --symlink options to wimapply, since I don't
+ think they are too useful and they got in the way of improving the code.
+
+ WIMs will now retain their GUIDs when rebuilt (e.g. with wimoptimize).
+
+ The 'mkwinpeimg' script now supports writing the ISO image to standard
+ output.
+
+ On Windows, sparse file attributes are no longer set on extracted files.
+
+ The shared library version has been bumped up. The main
+ incompatibilities are:
+
+ - WIMLIB_COMPRESSION_TYPE_XPRESS is now 1 and
+ WIMLIB_COMPRESSION_TYPE_LZX is now 2 (so it's the same as
+ WIMGAPI).
+
+ - 'struct wimlib_capture_config' has been removed. The library
+ now takes the path to the configuration file directly. This
+ affects wimlib_add_image(), wimlib_add_image_multisource(),
+ and wimlib_update_image(). However no code changes are
+ necessary if a NULL configuration was being used.
+
+ - Removed deprecated functions: some (de)compression functions,
+ wimlib_extract_files(), and wimlib_print_metadata().
+
+ - Removed extraction flags: WIMLIB_EXTRACT_FLAG_HARDLINK,
+ WIMLIB_EXTRACT_FLAG_SYMLINK, and
+ WIMLIB_EXTRACT_FLAG_FILE_ORDER.
+
+ - Removed progress messages:
+ WIMLIB_PROGRESS_MSG_APPLY_TIMESTAMPS,
+ WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_BEGIN,
+ WIMLIB_PROGRESS_MSG_EXTRACT_DIR_STRUCTURE_END.
+
+ - WIM paths passed to progress functions now have a leading
+ slash.
+
+Version 1.6.2:
Case-insensitive comparisons of strings (e.g. filenames) containing
UTF-16 codepoints above 32767 are now done correctly.