2011 will be the best year of games in history and the best year of RPGs in history.

Games not mentioned yet:
Kingdoms of Amalur: Reckoning (PC/PS3/360)
Paper Mario (3DS)
The 3rd Birthday (PSP)
The Legend of Heroes: Trails in the Sky (PSP)

For anyone interested, The Witcher is only $5 on Steam right now (75% Off) !!!!!!

If you're interested in The Witcher 2, then buy the first one because you'll be able to use your save game in the sequel!!

Good thinking, and I think Reckoning is supposed to be open world. We haven't seen much of it yet so might slip to 2012.

A lot of PC RPG exclusives are missing. PC is going to have it's biggest year in 2011, much because of it's RPG exclusives lineup:

1. Diablo III
2. Guild Wars 2
3. Torchlight II
4. The Witcher 2
5. Neverwinter
6. Star Wars: The Old Republic
7. Darkspore
8. Grim Dawn
9. Drakensange Online
10. Tera
11. Rift
12. Stellar Dawn
13. Dead State

And more, but these are enough for now.

PC is having 6 HUGE RPG exclusives: Diablo III, GW2, The Witcher 2, Neverwinter, SW:TOR, and Torchlight 2.

Plus, also a few RPGs that come from veteran RPG developers, such as Grim Dawn and Rift.

There's also Darkspore, which looks quite impressive so far.

For those wondering, here's all the 3DS RPGs so far announced...

• Class of Heroes 3D x 3D (Acquire / Zero.Div) 
• Dragon Quest (Square Enix / Armor Project)
• Etrian Odyssey (Atlus)
• Eternal Eden (Blossomsoft)
• Fantasy Life (Level 5 / Brownie Brown) 
• Final Fantasy (Square Enix)
• Kingdom Hearts 3D (Square Enix / Square Enix Osaka)
• Metabots 3D (Rocket Co.)
• Paper Mario (Nintendo / Intelligent Systems)
• Shin Megami Tensei (Atlus)
• Shin Megami Tensei: Devil Survivor (Atlus)
• Shin Megami Tensei: Persona (Atlus)
• Space Agency (Audio Inc.)
• SRPG (Alphaunit)
• Super Robot Taisen 3D (Bandai / Banpresto)
• Tales of the Abyss (Namco / Namco Tales Studio) 
• Time Travelers (Level 5)

@jarrod: I think Time Travelers is an adventure game.

RPG I want to buy in 2011 (not sure if enougn money...) :

- Ninokuni ps3

- FF Versus 13

- FF IV complete psp

- Ar Tonelico 3

- Mass Effect 2

- Atelier Totori

- Atelier Rorona

- Trinity z'ill

- Tales of Xilia/Graces (if Namco do it stateside)

- WKC2 and psp

And probabbly more...

Updated , btw i think those 3DS games are a long way off, but Paper Mario seems likely

also i'm not going to add MMOs , i'm talking about normal RPGs (not shooters as well)

I expect most of those exclusives to have console versions.  aRPG work better with controllers than KB and mouse for the most part.