Here are mine in a nutshell:
- The 3DS Mario game will be called Super Mario Galaxy 3DS.
- Zelda: Skyward Sword WILL meet its Holiday 2011 release date.   
- Project Cafe won't be given a final name.   
- 3DS price drop and a new color for Holiday 2011.   
Now for my "Non-tendo" predictions...
- The HD remake of Final Fantasy VII will be shown.   
- Microsoft won't bounce back from their showing last year.   
- Mega Man X9 will be announced.
Bold? Yes. Feel free to agree/disagree with me. : :
: : 
I disagree with the above.  
I think it needs the brand delineation and to hearken to the slightly different portable Mario of Yore. (Coin picking up Fireball anyone?)
I've just accepted that Zelda: Forever is never coming out.  
A name is the only thing I be guaranteeing we'll get for Cafe.
We won't get a 3DS price drop so soon.  This would set a bad precedence and we did not see it with the less successful at this time DS.  You don't want people thinking when the New Console comes out that within a year they'll be a price drop.  This is how you get people to forever put off adoption.  I know I've done it with different Tech.  Though we will see new colors earlier I believe.
Pokemon Gray I think will be coming and coming for the 3DS. (Like I'm fairly sure one of the originals where for the GBC, Yellow I think.)
I think Square knows that FFVII is worth more to them as a Cock-Tease.  Though I wouldn't mind the battle system coming back.
I don't think MS will have a bad E3 but, Sony I think will.
I don't see another direct entry  into the X game series but, I do see a new Megaman game that is very much in the same spirit as what they  did going from Megaman to X.
The rest I can get behind.