7-Zip 4.58 alpha 4 for Windows 32bit and 64bit

7-Zip 4.58 alpha 4 was released.

7-Zip for 32-bit Windows:
http://www.7-zip.org/alpha/7z458a4.exe

7-Zip for 64-bit Windows x64:
http://www.7-zip.org/alpha/7z458a4-x64.msi

What's new after 7-Zip 4.57:
- Some speed optimizations.
- 7-Zip now can unpack multivolume RAR archives created with
"old style volume names" scheme and names *.001, *.002, ...
- Some bugs were fixed.
- New localizations: Punjabi (Indian), Pashto.

7-Zip 4.58 alpha 4 also fixes some bugs of version 4.58 alpha 3.

Don't use this alpha version for important data. Call "Test" command after each compressing operation.

You can post some benchmark results for 7-Zip 4.57 / 4.58. Just call:
7z b
Write also some information about your CPU: CPU Type/Frequency.
to that forum: http://sourceforge.net/forum/forum.php?thread_id=1951627&forum_id=45797

Notes: LZMA decoder was rewritten. So please try "test" command for your .7z archives.

Homepage: 7-Zip 4.58 alpha 4 (New)