Again this is just a rumor.
But what I have heard is that they may do two versions of each channel one in 720p and 1080i and this will let the cable and satellite companies make the switch anchanes they need to do on their end. Eventually the 720p feed would go away.
Again this is just a rumor.
If it doesn't happen, break out the pitchforks!!!
Only kidding Scott. However they address it, it's good to know that they're planning on doing something about it.