Is the 7900 that unpopular that no one knows this?
The other question you have to ask yourself is..."is it really worth it to buy a 1.4 capable receiver"
My thinking is..you can buy 1.3 capable receivers these days for 50% of retail...the Denon 4310 comes to mind...there are several of the higher end Onkyos that are subject to the same discount
With the money you save( going 1.3 instead of 1.4) you can buy a more higher end receiver than would have been in the budget before
Buy a blu ray player with the 2 HDMI outputs ...run one cable to the Tv and another one for audio...as I am going to do.
Enjoy the higher quality sound of the upgraded AVR
To me...the ethernet and ARC are not worth the extra 30-40% you will pay to go from 1.3 to 1.4 capability