VMware workstation 5.5 is now available for download. The new features are documented in the release notes. If you've purchased 5.0 you're entitled to a free upgrade (as you have a 18 month upgrade period from the date of purchase).

If you're looking to buy VMware Workstation 5, you can save 5% off your purchase price (I wish I had known about this before I just purchased!). Just use this referral code when you make your purchase (AKA a coupon or discount):

VMRC-AARCOR806

Some useful links: product overview, screen shots, evaulation download, and upgrade FAQ.

The VMware coupon works for any software inlcuding ESX server, GSX server, etc.