To be honest, 4K is so far away I'm not worried about it. Before movies and games take advantage of this, we're going to need much more than a new AV. We're going to need most things new to benefit from the higher resolution. HDMI 2 will be the standard when we have 4K, so don't worry at all.
You could of course, use the AV for the audio. It's not all that bad
What do you mean? there are already alot of movies that are in 4k and for sale, i guess i should have waited another year.. this really sucks that i spent so much on a reciever and now i wont be able to enjoy 4k with it