Sporedum has been doing some digging around at various retail sites and saw that the speculated date for Spore Galactic Adventures has been changed from March 17 to May 19.  Reports show that Amazon, EB Games, GameStop (yeah, they are the same as EB), and even GameFAQs has May 19th listed, while IGN and AllGame and Play.com still show March 17.

Of course, Maxis never did release a final date of the game anyways, as it was AllPlay and Gamestop who first brought the news of the game being released on March 17.  Guess we will just have to wait until they issue a press release stating the true date.