the newest issue of nintendo power (#200) features a contest for an advance copy of metroid prime hunters and the graphite black DS... when combined with the earlier rumor of a metroid bundle... many people are assuming that this will be a new bundle... black DS and metroid hunters... it'll probably release around the same time as metroid, late march or early april.
granted, this isn't a guarantee. you could wind up waiting until then only to find nintendo not do anything. but given everything we know, i think this sounds like pretty solid evidence.
i am a bit surprised we haven't heard anything about the candy pink coming in a bundle with super princess peach in february. i guess it's still early. but given the success of the pink nintendogs bundle, and the complaints about US not getting candy pink (and getting pearl pink instead), and the seemingly perfect tie-in for the game and the color... i thought it was a no-brainer. perhaps it'll be a retailer exclusive or something, and announced closer to the release? wishful thinking...