Here's a list of everything out and coming out.
Wave 1 -
Single Packs -
- Stealth Elf
- Stump Smash
- Sonic Boom
- Whirlwind (Target only)
- Drill Sergeant (Walmart only)
- Boomer
- Drobot
- Zap
- Voodood
- Bash
- Prism Break
- Eruptor
- Flameslinger
- Chop Chop
Triple Packs -
- Prism Break, Boomer, Voodood
- Eruptor, Chop Chop, Bash
- Drobot, Flameslinger, Stump Smash
Adventure Packs -
- Pirate Seas with Terrafin
- Darklight Crypt with Ghost Roaster (Toys R Us exclusive)
3DS -
- Dark Spyro (will remain 3DS exclusive forever)
- Ignitor (will be released in a single pack in June)
Wave 2 -
Single Packs -
- Hex
- Dino Rang
- Wrecking Ball
- Eruptor
- Boomer
- Zap
Triple Packs -
- x2 Wrecking Ball, Stealth Elf, Sonic Boom
- x2 Zap, Hex, Dino Rang
Adventure Packs -
- Darklight Crypt (mass retail)
Wave 3 -
Single Packs -
- Cynder
- Double Trouble
- Flameslinger
- Chop Chop
- Drill Sergeant (mass retail)
- Whirlwind (mass retail)
Triple Packs -
- x2 Whirlwind, Double Trouble, Drill Sergeant
- x2 Drobot, Flameslinger, Stump Smash
- x2 Wrecking Ball, Stealth Elf, Sonic Boom
Adventure Packs -
- x2 Empire of Ice with Slam Bam
- x2 Pirate Seas with Terrafin
- x2 Darklight Crypt with Ghost Roaster
Now these future waves are based on if the original release schedule, gotten from a Skylanders Catalog, is followed -
Wave 4 (April) -
Single Packs -
- Zook
- Lightning Rod
Triple Packs -
- Cynder, Lightning Rod, Zook
Adventure Packs -
- Dragon's Peak with Sunburn
Wave 5 (June) -
Single Packs -
- Camo
- Warnado
- Ignitor (no longer 3DS exclusive)
Triple Packs -
- Warnado, Camo, Ignitor
Summer 2012 -
Single Packs -
- Wham Shell
The FAQ on Skylanders official Facebook page, suggests that the remaining characters will now be released in Spring, which could still mean April to June, but many of us speculate it all comes out in April now.