Core Skylanders
Blackout, Spotlight
Echo, Rocky Roll
Wave 4 will also bring to US retail the singles for Bat Spin and High Five who were a part of Wave 3 elsewhere.
Trap Masters
Short Cut, Thunderbolt
There are also single releases for the new Dark and Light Trap Masters Knight Mare and Knight Light. This will allow you to access the Dark/Light Elemental Gates without having to buy the full Expansion Packs.
Mini Skylanders
Breeze and Pet-Vac
Barkley and Whisper Elf
Traps
Air Sword, Earth Handstand, Life Sword, Fire Captain's Hat, Undead Captain's Hat
Tech Handstand, Magic Rocket, Dark Sword, Dark Handstand, Light Rocket
There will also be two new Trap Triple Packs. One contains Tech, Fire and Kaos traps, and the other contains Air, Undead and Magic traps.
And in other Skylander release news:
Legendary Bushwhack is apparently due for release this very Sunday at Toys R Us. And on the same day Nitro Head Rush is due out as well at Target.
Power Punch Jet-Vac and Eggsellent Weeruptor have been unveiled for an Easter release along with a special looking Earth Handstand trap.
And of course don't forget Love Potion Pop Fizz for Valentine's Day, he's available right now.
For those of you looking for something more than just the in-game toys, from February 14th in the US specially marked boxes of General Mills cereals (including Honey Nut Cheerios, Cinnamon Toast Crunch, Reese's Puffs, Trix and Lucky Charms) will have a pack of 10 Skystones cards inside that can be used to play a game of Skystones for real! There are four different packs to collect each with two "boss" cards included. See this forum topic for sightings and more details on the cards themselves.