According to slashdot [1] Apple [2] comes out with a new OS X release called Panther. Some features:
* Lower-level enhancements include NFS file locking
* built-in X11
* FreeBSD 5.0
* IPsec-based VPN
* various SMB and Active Directory enhancements
* others more
[1] http://apple.slashdot.org/apple/03/06/23/188254.shtml?tid=107&tid=187
[2] http://developer.apple.com/wwdc/