We are so excited about being able to use either CableCARD or a Viiv powered DIRECTV STB that you can bet we will keep you updated as soon as we find out more. For now all we have is a mention by DIRECTV CEO Chase Carey at the Intel development conference's keynote. He said that the Viiv-certified DIRECTV box was in the works.
The real question is if it will be available before the standalone HD TiVo. I probably won't buy both, but I will buy the first to market.