Outlaw hasn't ruled out auto-EQ, which is a popular choice (although not one that I've felt a burning need for based on some information I've looked at). The biggest functionality improvements I wanted are in place (sync button displays sync setting on the front panel; surround modes display the current mode the first time you press them). I wouldn't mind seeing an option to select analog bypass for the 7.1 input, although from my listening tests I don't feel a need to use it myself.
I think the 990 is very future proof. The DVI switching gives you a way to handle multiple DVI/HDMI video sources. The new audio formats offered by HD-DVD or Blu-ray will be available at multichannel analog outputs indefinitely because of the sheer size of the installed user base that needs those analog outputs. My
HDMI FAQ spells out all the nasty details of delivering any sort of digital signal with the new audio formats (Dolby Digital Plus, DTS-HD, Dolby TrueHD). It would take a significant hardware upgrade to add HDMI v1.1 or higher to get even the decoded PCM of those formats (or the only barely official v1.3 to get bitstreams). An upgrade doing just that for Anthem's AVM's costs about as much as a complete Model 970 - there's a lot involved under the hood that was basically too uncertain to try to include in the 990 when it was developed.