I had a Comcast tech over on Sunday. He installed an RNG200n, so the cloud based Guide 2.0 is available and you need not get anyroom DVR service. You just need a box capable of handling that feature. The regular RNG200 boxes, for whatever reason, can't get the new guide.
While chatting, the tech said that by mid 2013, the former Time Warner areas (Minneapolis and its suburbs) that use Cisco/Scientific Atlanta equipment can expect to see as many as 50 to 75 additional HD channels due to the end of the remaining analog feeds and other capacity expansion work.