Just because a new model comes out, doesn't mean you have to get it. The only people at this point who actually 'need' to upgrade soon are the ones with HD boxes that don't do MPEG4 compression. There isn't a timeline either as to when those legacy HD channels are going to switch to MPEG4 either. And, I believe they are offering free or drastically reduced trade-ins for those with older boxes.
It's not like TWC where you WANT the next model because the box you have now is terrible. I'm still so happy I don't have to use that SA8300 anymore, good lord
. I love the DirecTV HD Box. It's grrrrreat!