7-Zip 15.01 alpha 发布，此版本是个开发版本，请不要用该版本处理重要的文件和文档。
该版本现已提供下载：
7-Zip for 32-bit Windows:
http://dl.7-zip.org/7z1501.exe
or
http://dl.7-zip.org/7z1501.msi
7-Zip for 64-bit Windows x64:
http://dl.7-zip.org/7z1501-x64.msi
相比 7-Zip 9.38 beta 版本有以下改进：
7-Zip now can create 7z, xz and zip archives with 1536 MB dictionary for LZMA/LZMA2.
7-Zip File Manager now can operate with alternate file streams at NTFS
volumes via "File / Alternate Streams" menu command.
7-Zip now can extract .zipx (WinZip) archives that use xz compression.
new optional "section size" parameter for BCJ2 filter for compression ratio improving.
Example: -mf=BCJ2:d9M, if largest executable section in files is smaller than 9 MB.
Speed optimizations for BCJ2 filter and SHA-1 and SHA-256 calculation.
Console version now uses stderr stream for error messages.
Console version now shows names of processed files only in progress line by default.
new -bb[0-3] switch to set output log level. -bb1 shows names of processed files in log.
new -bs[o|e|p][0|1|2] switch to set stream for output messages;
o: output, e: error, p: progress line; 0: disable, 1: stdout, 2: stderr.
new -bt switch to show execution time statistics.
new -myx[0-9] switch to set level of file analysis.
new -mmtf- switch to set single thread mode for filters.
The BUG was fixed:
7-Zip didn't restore NTFS permissions for folders during extracting from WIM archives.
The BUG was fixed:
The command line version: if the command "rn" (Rename) was called with more
than one pair of paths, 7-Zip used only first rename pair.
The BUG was fixed:
7-Zip crashed for ZIP/LZMA/AES/AES-NI.
Some bugs were fixed.

我还在用9.22版。