Haven't we known about this for 2 or 3 months? As far as I can see, nothing new. The only real draw back I can see about it is no hard drive, so you still need to get memory cards. So unless you plan on going digi in, it seems to make more sense to get the R4. It will be about the same the price after you get some memory, plus you have a 40GB HD and 4 channels.
Rick