Next-Next Gen Preorders?

It seems with each subsequent generation, the consoles seem to be increasingly difficult to get at launch. I remember looking everywhere for an N64, but I found one at KMart. Playstation 2 was really hard (I had a Dreamcast, so I was content with waiting). I reserved my Xbox 360 about a month before it came out, and I still haven't gotten it. So, if you know any retailers taking preorders for Xbox 720s, Playstation 4s, or Virtual Boy 2s (my guess for what follows Revolution) please let me know because I think I need to put in my preorder right away!