There's no guaranty Nintendo will take E3. Not when this is Nintendo. I'm sure Microsoft and Sony have a ton of goodies and big surprises they're holding back for E3 (though I expect more leaks closer to E3), and I'm not totally confident Nintendo will pull the Wii U re-reveal off.
A chunk of their conference dedicated to ports that will show up on other platforms, even with Wii U gimmicks trying to impress, just wont cut it.
Agreed. I'm almost sure MS and Sony have something going on for this years E3. They're not going to let the Wii U and Nintendo outshine them this year.
If all I see is ports and first party titles I don't like I won't be impressed at all.