9.15 beta

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- Some bugs were fixed.
- New localization: Tatar

9.14 beta

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- WIM support was improved.

9.13 beta

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- 7-Zip now stores NTFS file timestamps to ZIP archives.
- New additional “Open archive >” item in context menu allows to select archive type for some files.
- Some bugs were fixed.
- New localization: Uyghur.

9.12 beta

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- ZIP / PPMd compression ratio was improved in Maximum and Ultra modes.
- The BUG in 7-Zip 9.* beta was fixed: LZMA2 codec didn’t work, if more than 10 threads were used (or more than 20 threads in some modes).

9.11 beta

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- 7-Zip now supports PPMd compression in ZIP archives.
- Speed optimizations in PPMd codec.
- The support for archives in installers was improved.
- Some bugs were fixed.
- New localization: Kazakh.

9.10 beta

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- The BUG in 7-Zip 9.09 beta was fixed: 7-Zip created incorrect ZIP archives, if ZipCrypto encryption was used.

9.09 beta

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- 7-Zip now can unpack Apple Partition Map (APM) disk images.
- Speed optimizations in AES code for Intel’s 32nm CPUs.
- Speed optimizations in CRC calculation code for Intel’s Atom CPUs.
- Some bugs were fixed.

9.07 beta

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- It’s possible to specify Diff program in options (7-Zip File Manager).
- Some bugs were fixed.

9.06 beta

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- 7-Zip now can unpack MSLZ archives.
- Partial parsing for EXE resources, SWF and FLV.
- Some bugs were fixed.

9.04 beta

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- 7-Zip now can update solid .7z archives.
- 7-Zip now supports LZMA2 compression method.
- 7-Zip now supports XZ archives.
- 7-Zip now can unpack NTFS, FAT, VHD and MBR archives.
- 7-Zip now can unpack GZip, BZip2, LZMA, XZ and TAR archives from stdin.
- 7-Zip now can open/copy/compress disk images (like \\.\c:) from \\.\ folder.
- 7-Zip File Manager now doesn’t use temp files to open nested archives stored without compression.
- New -scrc switch to calculate total CRC-32 during extracting / testing.
- New -scc{WIN|DOS|UTF-8} switch to specify charset for console input/output (default = DOS).
- Some bugs were fixed.

- New ‘Shutdown’ variable in ‘Software\WinRAR\Policy’ registry key allows to disable “Turn PC off when done” option for security reasons. Read “Configuration settings/Registry variables” for more details.

- Program Compatibility Assistant in Windows 7 will not display an erroneous “This program might not have installed correctly” message after closing RAR SFX archives created by this beta.

- Improved compatibility with high DPI Windows display mode.

- Bugs fixed:
a) beta 3 did not display archiving commands in context menu if user selected several archives;
b) beta 3 did not handle ‘LongLink’ records in TAR archives correctly;
c) recovery record based repair did not work correctly in previous beta versions;
d) beta 3 could display a folder icon for archived files without a file extension.

- Delay between right clicking selected files in Windows Explorer and displaying the context menu is reduced. This delay can be noticeable, when you right click several thousands of files.
- dragging a file over an existing archive in Windows Explorer did not work for 64 bit WinRAR;
- 64 bit beta 1 shell extension crashed if user right clicked “Startup” folder in Start Menu and selected “Open” or “Explore” commands;
- “Scan archive for viruses” command in 64 bit beta 1 could fail to autodetect some of 32 bit antiviruses detected by 32 bit version;
- beta 1 hung when the entire folder specified as a mask was excluded: ‘rar a -xfolder arc folder’;
- sometimes beta 1 could hang when creating a new RAR archive if archive comment or one of advanced NTFS options was specified;
- ZIP encryption code was updated to include recent InfoZip fixes;
- 64 bit version did not store the toolbar layout.

- WinRAR version for Windows x64 is available. If you use Windows x64, it is strongly recommended to install 64 bit WinRAR version. It provides a higher performance and better shell integration than 32 bit version.
- RAR compression speed is improved for multi-core and multi-CPU systems. This improvement is most noticeable in Windows Vista and Windows 7 operating systems.
- “Remove duplicate folders from extraction path” option in “Settings/Compression” dialog is replaced by more universal “Remove redundant folders from extraction path” option. This option will eliminate redundant archive name based folders from extraction path if you unpack an archive with “Extract to DestName\” context menu command and if archive root folder contains only one folder and no files.
- You can enable “Show seconds” option in “Settings/File list” dialog if you wish to see seconds in file dates in file list in WinRAR shell.
- “Where to check for SFX archives” options group in “Settings/Integration/Context menus items” dialog lets you to control processing of SFX archives in context menus. For example, if you frequently right click “.exe” files on slow network disks, you can turn off “Network disks” options to minimize the delay before displaying the context menu.
- If you sort files by name in the file list in WinRAR shell, WinRAR will use the new logical file name sorting, same as in Windows Explorer, considering digits in file names by their numerical value. So files will be sorted as 1.txt, 2.txt, 10.txt instead of previous 1.txt, 10.txt, 2.txt. This new sort behavior is available in Windows XP Service Pack 2 and newer.
- Ctrl+W key combination can be used to close the main WinRAR window also as WinRAR viewer windows. “View as Windows text” shortcut in WinRAR viewer changed from Ctrl+W to Ctrl+I.
- New command line switch -r- disables recursion completely. So ‘rar a -r- arc dirname’ command will add only the empty dirname folder and ignore its contents. By default, if dirname does not include wildcards, RAR adds its contents even if -r switch is not specified.
- If used when extracting, the new command line switch -ai forces RAR to ignore file attributes. When using this switch, extracted files will always have attributes assigned by operating system to a newly created file by default.
- If output file name is not specified in “cw” command, console RAR will send comment data to stdout.
- When compressing stdin data with -si[name] switch, RAR sets modification time of archived entry to current system time. Previous RAR versions did not fill this field, resulting in meaningless modification time for stdin.
- Message displayed when you place the mouse cursor on WinRAR tray icon includes the archive name now. Previously only time left and total percent were displayed for archiving operations.

Changes in “Extraction path and options” dialog:
- “New folder” button creates a new subfolder in currently selected folder;
- F2 key renames a selected folder in the folders tree;
- F5 key updated the tree pane contents;
- Del key removes a selected folder in the folders tree.

Bugs fixed:
- WinRAR could fail to open tar or tar.gz archive if such archive contained a file larger than 8 GB;
- WinRAR context menu did not work properly in Windows 7 beta if icons in context menus were enabled and user clicked a file inside of Windows 7 Library folder;
- Previous WinRAR versions failed to rename files having 5 or more continuous spaces in the name. WinRAR shell does not display such spaces for safety reasons, because they can hide an actual file extension. But this security measure prevented the rename command to work properly.

- The bug in 7-Zip 4.63 was fixed: 7-Zip could not decrypt .ZIP archives encrypted with WinZip-AES method.

- 7-Zip now can unpack ZIP archives encrypted with PKWARE-AES.
- Some bugs were fixed.