Welcome to the forum...
What are you specifically looking for from a 2013 avr vs a 2012? I would first pick an AVR that you want and then call around and see when and where it will be available... A $5K budget isnt quite the amount I would want before I stop looking for sales, maybe a $60K budget and I wouldnt worry about sales anymore, but even then I would probably be getting open box amps if I could save a few hundred, lol... As far as I've read the 2012 lineups arent going to be much ahead last years...