Nope
The next update for the mini will be sooner, rather than later, imo.
Since the Macbooks are already up to the SantaRosa chipset, and have a new GPU in the X3100, those are the next updates to the mini. I would expect by summer to see the new macbook components in a minor update to the mini's current specs. Wireless N would also be a great and do-able upgrade, but I guess that depends on Apple's will 🙂