Nintendo just released some preliminary info on the revolution, including...

There are 2 more absolutely beautiful pics and specs in this
this nintendo article
Must not forget to mention the next shrinking experiment to the GBA...

Looks like us SP owners need to think of what to trade for it at a local GameStop. That is, when it ships.
Nintendo has a lot to gain this year, and they shall not lose.
[Edit] The revolution looks like a CD-ROM Drive that I could stick into a computer. I wonder if it will be possible. [/Edit]
-Joe