Oh GOD where do I start?
Well, I suppose I could start with the Wii's Firmware update.
Yes, updated to Version 3.1. Along with the update, you can go into the WiiWare section of the Wii Shop Channel and update your Everybody Votes Channel and Internet Channel. You probably got the message via WiiCOnnect24, so view so what changed there.

As for the press conference? Oh man...I didn't expect a Megaton of information but dear GOD was I wrong! I suggest going to GoNintendo.com and looking back through about 4 pages worth of updates...because there are WAAAY too many links to give. I'll just list the main stuff here:

New Channels/Info:
Check Mii Out
DS Download Channel

WiiWare:
Pokemon Farm
SuperStar Soldier...N was it?
Another PuzzLoop game
Dr. Mario game

Game Updates:
Mario Kart Wii (Peppy: TRY A SOMERSAULT!!)
Super Mario Galaxy
Disaster Day of Crisis (Oh, It looks like a disaster alright)
Super Smash Bros. Brawl (Sonic, in case you didn't know by now from all the Sonic fanboy screams)
BWii Battalion Wars II
Final Fantasy Crystal Chronicles
WiiFit

NEW Games:
Kirby SuperStar DS
Super Mario Stadium Baseball

There's probably a LOT more I missed...but please, for the love of God, DON'T MAKE ME POST THE LINKS TO THEM ALL!!! GO TO GONINTENDO.COM, I BEG OF YOU!!!