Dunno when the actual release date is, but I've heard It's Q4 2011.
Anyway, there are 3 pre-order options.
Option one is just pre-ordering the game from any retailer. For doing so, you'll get early game access (which is always kinda neat) and a Color Stone that lets you change the color of your blaster lasers and lightsaber.
By pre-ordering on Origin (EA's new-ish online Steam-equivalent, which you can download for free) will get you both those bonuses as well as a few others:
-A flare gun, which will let you shoot flares into the sky. Dunno if it has any deeper purpose.
-A training droid, which says in the description it will hover at your side for combat assistance. But no info on what that means, or if it is actually just a non-combat pet.
-A holo-dancer, which is exactly what it sounds like.
-A Space-Cam, which will let you record your journeys as videos (so no need for fraps?)
-A STAP (Single Trooper Aerial Platform), which is a personal vehicle.
By pre-ordering the Collector's Edition, you'll get all of these bonuses plus:
"-The Journal of Master Gnost-Dural: 111 pages of notes and sketches by the revered Jedi Master from the early years of the Great Hyperspace War between the Galactic Republic and the Sith Empire. Features never-before-seen artwork and all-new information.
-Darth Malgus statue: The villainous Darth Malgus comes to life with this exclusive 9 in. collectible statue from Gentle Giant studios.
-The Old Republic Galaxy Map: 14 x 20 inch at-a-glance look at the known galaxy.
-Security Authentication Key Fob: Keep your Lightsaber and credits safe with this custom Security Authentication Key Fob for your game account.
-Music of Star Wars: The Old Republic CD: Seventeen orchestral music tracks from Star Wars: The Old Republic.
-Star Wars: The Old Republic Game: The Star Wars: The Old Republic game on DVD-ROM in a collectible metal case."
-A Mouse Droid (which is in all likelihood a non-combat pet).
-Access to the in-game Collector's Edition store. "Unique in-game vendor with a dynamic assortment of items available only to purchasers of the Collector's Edition."
As is normal, pre-order is at least $5 down. Not gonna lie, I may go for the CE...