I'm calling it now, Microsoft announces a new platform.

[Jinova]

SmokedHostage said:

And it could be either a new home console or a new handheld.

I'm pretty sure MS doesn't want to be the only one without a new toy at E3. ;)

I agree.  I cant see MS not having some type of hardware showing to counter Project Cafe and NGP. My guess is if they do have something it will be a tech demo of the successor to the Xbox 360.  But a handheld would be awesome!