I went and saw one recently. I plan to get that too. I wonder how different it is from the one I got from KMart two years ago. That one didn't seem to be compatible with the 110v sets. A 110v bulb wouldn't light up in the socket.
Whoever makes the Target bulb should sell the bulbs in packs for Christmas. The Carpenter bulbs look much bettr as they use faceted clear glass (sort of like theForever Brights, but in a square pattern, and in both the Target and KMart bulbs, the lower half of the bulb is opaque (gives almost no light), as that is probably where the resistors and programming chip are. And while the Target light is about $7, the Carpenter bulbs are $3 apiece, but their transformer for them is $85 (why I am trying to find out if I can run them from an Eveready 12V/250mA lantern battery), and their smallest string of sockets for them is a 25 unit string for $9.
I do plan also to get the new Forever Bright frosted bulbs. The pure green with the other colors must look really Christmassy. I also want to get fiberopticproducts.com's Cool Glow light source, which uses the ColorKinetics programmable/mixable RGB LED MR16. I could even find uses for that year round.