Well the new 0.7 SDK is due out this week, it will be the first to integrate GPU drivers in to the API, and get rid of extended mode. I hope there will be enough time for them to add the SDK features between release of 0.7 and 1.5.
Can someone ask in the Q&A about support?
As a side note I'm going to be legitimately pissed if my AMD card still can't run it...