This announcement on the official Spore Forum invites Spore players local to the San Francisco Bay area, "to join us at the Maxis studio in Emeryville for user experience testing on the upcoming expansion." They kick this off saying, "We’ve heard your feedback on our official Space Adventures thread and you’ve got some great ideas," which seems like a pretty good confirmation of indications the expansion will be a space-based affair called Spore: Galactic Adventures. For those interested in the testing part, they outline qualifications for those who can spend a couple of hours at Maxis' offices in Emeryville, CA on January 13 or 14, and promise a small compensation for your time.