I spotted on Warp2Search that a beta version of WinZip 9.0 is now available for download, though not recommended for general use, I know a lot of you like to test out beta stuff just to see what's new so here you are.

Improvements in WinZip 9.0 concentrate on its core functionality: compression, capacity, and a new, advanced data encryption capability.
WinZip 9.0 supports the "enhanced deflate" compression method. This compression method provides greater compression and reduces the size of your Zip files, saving you data transmission time and valuable disk space.