Only the most important changes more recent than version 0.6 are noted here.
-Version 1.6.2 (BETA):
+Version 1.6.3-BETA:
+ Added support for "WIMBoot". On any platform, you can now capture a WIM
+ as WIMBoot-compatible. In addition, on Windows, specifically Windows
+ 8.1 Update 1 and later, you can now apply a WIM archive in a special
+ mode that causes extracted files to be externally backed by the WIM
+ archive. See the documentation for the new '--wimboot' option to
+ wimcapture and wimapply, respectively, for more information.
+
+ The shared library version has been bumped up; however, there are only
+ a few incompatibilities:
+
+ - 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().
+
+ Otherwise the API and ABI is the same.
+
+Version 1.6.2:
Case-insensitive comparisons of strings (e.g. filenames) containing
UTF-16 codepoints above 32767 are now done correctly.