Can you guys summarize what was announced at the conference?

I missed it and I have no idea what was announced at all. Thanks! :)

nothing really it was a waste of time. just confirmed sone new games like monster hunter anf fire emblem. a pink 3ds, and update to eshop. I waited up hours to watch it expecting something big but nothing.

Mario Tennis 3DS
Fire Emblem 3DS
Monster Hunter 4 for 3DS

The other announced games were weird Japanese games that probably won't be releasing anywhere else. Nintendo also confirmed a firmware update for the 3DS that will be bringing 3D video capture and some unspecified updates to the eShop. The new Fire Emblem and Monster Hunter look absolutely incredible, especially in terms of new gameplay features, and graphically as well. You just have to see them.

Hardware updates:
Misty Pink 3DS - Oct 20
Updates for E-shop and Mii Plaza

Game release dates (JP):

1st-party titles:
Super Mario 3D- Nov 3
Mario Kart 7 - Dec 1
Unnamed Fire Emblem - Spring 2012
Kid Icarus - First half 2012
Mario Tennis - 2012
Paper Mario - 2012
Luigi's Mansion - 2012
Mario & Sonic at the London Olympics - 2012
Animal Crossing - 2012
Tomodachi Collection - 2012
Unnamed soccer game - 2012

3rd-party titles:
Love Plus 3DS (Dating sim) - Dec 8
Monster Hunter Tri 3G (Capcom/Action)- Dec 10
SD Gundam G Generation 3D(SRPG) - Dec 22
Ace Combat 3D: Cross Rumble (Bandai Namco/Flight Action) - Winter 2011
Tekken 3D: Prime Edition (Bandai Namco/Fighting, comes with the Tekken movie) - Winter 2011
Theatrhythm Final Fantasy (Square Enix/Music) - Winter 2011
Metal Gear Solid 3D: Snake Eater - Winter 2011
Slime MoriMori (Square Enix I think)- Nov 2
Project Mirai (Vocaloid/Music) - 2012 March
Dynasty Warriors Vs. (Tecmo-Koei/Action) - 2012
Bravery Default: Flying Fairy (Square Enix/RPG) - 2012
Biohazard Revelations (Capcom/Survival Horror-Action) - 2012
Monster Hunter 4 (Capcom/Action) - TBA

That's all I took note of...

Edit: These are all JP release windows, so no confirmation on US/EU release dates yet. Thanks nintendofreak_2 for pointing this out. I keep forgetting that people here own US/EU region consoles instead of the JP console like I do :P

All of the dates in the post above are only for Japan so far.