HISTORY of the 7-Zip
--------------------

This file contains information about changes for latest versions of 7-Zip.
The full changelog file can be downloaded here:
https://7-zip.org/history.txt


24.01          2024-01-31
-------------------------
- 7-Zip now can unpack ZSTD archives (.zst filename extension).
- 7-Zip now can unpack ZIP, SquashFS and RPM archives that use ZSTD compression method.
- 7-Zip now supports fast hash algorithm XXH64 that is used in ZSTD.
- 7-Zip now can unpack RAR archives (that use larger than 4 GB dictionary) created by new WinRAR 7.00.
- 7-Zip now can unpack DMG archives that use XZ (ULMO/LZMA) compression method.
- 7-zip now can unpack NTFS images with cluster size larger than 64 KB.
- 7-zip now can unpack MBR and GDP images with 4 KB sectors.
- Speed optimizations for archive unpacking: rar, cab, wim, zip, gz.
- Speed optimizations for hash caclulation: CRC-32, CRC-64, Blake2sp.
- The bug was fixed: 7-Zip for Linux could fail for multivolume creation in some cases.
- Some bugs were fixed.


23.01          2023-06-20
-------------------------
- The page "Language" in 7-Zip's menu Tools/Options now shows information
  about selected translation, including the number of translated lines.
- Some bugs were fixed.


23.00          2023-05-07
-------------------------
- 7-Zip now can use new ARM64 filter for compression to 7z and xz archives.
  ARM64 filter can increase compression ratio for data containing executable
  files compiled for ARM64 (AArch64) architecture.
  Also 7-Zip now parses executable files (that have exe and dll filename extensions)
  before compressing, and it selects appropriate filter for each parsed file:
    - BCJ or BCJ2 filter for x86 executable files,
    - ARM64 filter for ARM64 executable files.
  Previous versions by default used x86 filter BCJ or BCJ2 for all exe/dll files.
- Default section size for BCJ2 filter was changed from 64 MiB to 240 MiB.
  It can increase compression ratio for executable files larger than 64 MiB.
- UDF: support was improved.
- cpio: support for hard links.
- Some changes and optimizations in WIM creation code.
- When new 7-Zip creates multivolume archive, 7-Zip keeps in open state
  only volumes that still can be changed. Previous versions kept all volumes
  in open state until the end of the archive creation.
- 7-Zip for Linux and macOS now can reduce the number of simultaneously open files,
  when 7-Zip opens, extracts or creates multivolume archive. It allows to avoid
  the failures for cases with big number of volumes, bacause there is a limitation
  for number of open files allowed for a single program in Linux and macOS.
- There are optimizations in code for 7-Zip's context menu in Explorer:
  the speed of preparing of the menu showing was improved for cases when big number of
  files were selected by external program for context menu that contains 7-Zip menu commands.
- There are changes in code for the drag-and-drop operations to and from 7-Zip File Manager.
  And the drag-and-drop operation with right button of mouse now is supported for some cases.
- The bugs were fixed:
  - ZIP archives: if multithreaded zip compression was performed with more than one
      file to stdout stream (-so switch), 7-zip didn't write "data descriptor" for some files.
  - ext4 archives: 7-Zip couldn't correctly extract symbolic link to directory from ext4 archives.
  - HFS and APFS archives: 7-Zip incorrectly decoded uncompressed blocks (64 KiB) in compressed forks.
  - HFS : zlib without Adler supported
  - Some another bugs were fixed.


==
End of document
