7-Zip is a file archiver with a high compression ratio. The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format. It also compresses to ZIP 2-10% better than PKZip and WinZip. It has an additional powerful command line version and FAR Manager support.
Some bugs were fixed
The number of DLL files was reduced
Now it’s possible to associate 7-zip with combined types like .tbz2
Switch -mhcf=off is not supported now
If -t{Type} switch is not specified, 7-Zip now uses extension of archive to detect the type of archive