From what I was told today from dev working on this, AMD may not be done in time for launch. Just to be on the safe side I am trying to get confirmation that Nvidia will be there at launch. I agree with you guys that it would definitely be desirable to have both major GPU brands supported at the start and will convey that to the team.
Well, that's particularly disappointing. My video cards are AMD.

Not quite sure I'm understanding you correctly. You're saying AMD probably won't be done in time for launch and you're trying to get confirmation that Nvidia will be ready for launch? Does this mean it's possible neither AMD nor Nvidia will be available at launch and it will be CPU only?
I got confirmation that Nvidia will be available by launch. AMD support apparently would require a mining software developer from the community, but we are already talking with some and will try to provide them the information they need to add support for x16rt. Multiple people in community and team have voiced the desire for AMD by launch, and we're currently discussing the best way to make sure we have as fair a launch as possible. We'll likely be announcing some info within the next 24 hours related to this.