Retail (Tuesday) - Bakugan Battle Brawlers: Defenders of the Core - Cabela's Dangerous Hunts 11 (standalone or with gun) - Chevrolet Camaro - CSI: Fatal Conspiracy - Deca Sports 3 - Disney Channel All Star Party - Dora the Explorer: Dora's Big Birthday Adventure - Family Party: 90 Great Games Party Pack - Hasbro Family Game Night 3 - Monopoly Streets - NERF N-Strike Double Blast Bundle - Remington Super Slam Hunting North America - Rock Band 3 (standalone or w/keyboard; also, standalone instruments: mic, drum kit, very expensive pro guitar, keyboard) - Shaun White Skateboarding - Star Wars: The Force Unleashed 2 - Tony Hawk Shred (standalone or with board) - WWE SmackDown vs. Raw 2011
Rock Band DLC (Tuesday) From here on out, the DLC will only be compatible with Rock Band 3. - The Doors - The Crystal Ship - The Doors - Hello, I Love You - The Doors - L.A. Woman - The Doors - Love Her Madly - The Doors - Love Me Two Times - The Doors - Peace Frog - The Doors - People Are Strange - The Doors - Roadhouse Blues - The Doors - Soul Kitchen
If you buy Rock Band 3 this week, you also get FREEEEEEE songs by The Doors, available only through the in-game store: - The Doors - Light My Fire - The Doors - Riders on the Storm - The Doors - Touch Me
Presumably these will be available for sale later on if you miss the present for the early adopters.
Rock Band Network DLC (Tuesday) – Band of Horses – The Funeral – Bif Naked – Sick – Clutch – The Mob Goes Wild – Demon Hunter – Collapsing – In This Moment – Mechanical Love – of Montreal – Heimdalsgate Like a Promethean Curse – The Shins – So Says I – Testament – Henchmen Ride
Guitar Hero DLC (Tuesday) - Little Nell - Time Warp - Meat Loaf - Hot Patootie - Tim Curry - Sweet Transvestite - the Soundgarden songs from a few weeks ago can now be bought individually instead of just in a pack (well, at least on the Xbox - I assume this is the case on the Wii too)
I don't know how the exporting works on the Wii, but I'm going to assume that some of this appplies here:
Rock Band songs that can't be exported into Rock Band 3: - Black Sabbath - Paranoid (this couldn't be played in Rock Band 2 either) - Iron Maiden - Run To The Hills (this couldn't be played in Rock Band 2 either) - Red Hot Chili Peppers - Dani California - Metallica - Enter Sandman (this couldn't be played in Rock Band 2 either) - Soundgarden - Black Hole Sun
Rock Band 2 songs that can't be exported into Rock Band 3: – AC/DC – Let There Be Rock – Journey – Any Way You Want It – Metallica – Battery – Red Hot Chili Peppers – Give It Away – Soundgarden – Spoonman
Rock Band 2 songs that can't be exported into Rock Band 3, but have been promised as free DLC in the future - "these songs consist mostly of bands formed by Harmonix employees, as well as bands based near Harmonix's headquarters" says Wikipedia - I bet when we get the DLC, they'll have Pro Guitar parts - Abnormality - Visions - Anarchy Club - Get Clean - Bang Camaro - Night Lies - Breaking Wheel - Shoulder To The Plow - Libyans - Welcome To The Neighborhood - The Main Drag - A Jagged Gorgeous Winter - Speck - Conventional Lover - The Sterns - Supreme Girl - That Handsome Devil - Rob The Prez-O-Dent
I'm pretty sure the problems that causes are deliberately coded in and of the "it dicks with your stats so you can't cheat your way to 100% completion" variety, rather than of the preventing you saving at all nature.