John Drake of Harmonix Studios had this to say on the Harmonix Forums
We’ve seen a lot of questions pop up in response to Viacom’s statements this morning regarding their intention to sell Harmonix. We’ve posted this thread to respond to those questions. Please keep your forum conversations regarding this matter in this thread. We’ll check in throughout the day as we’re able.
This morning’s announcement does not affect the ongoing work at the studio as we continue to support our existing franchises, Rock Band and Dance Central. As stated earlier, Viacom is in discussions with several potential buyers and will continue to fully support the business until a sale is completed.
If you have additional questions or concerns, please post them in this thread. If you’re a member of the media with inquiry, you can reach out to us firstname.lastname@example.org. (Please don’t email this address if you’re not from a press outlet).
Regarding potential publishers, it’s premature to discuss specific publishers at this time, though we look forward to working with Viacom to find the best home for our studio. Please keep speculation about that to a minimum in this conversation.
Many of you have asked about DLC. To be clear, our earlier statement that we will continue to support our existing franchises holds true and work at the studio is not affected by this announcement. RB DLC will continue unabated. We’re excited to confirm that The BeeGees are our next DLC pack.
Some of you have been chiming in about our different partners and what this announcement means for [the Fender Squier/Mad Catz Hardware/EA Distribution]. Those partnerships are unaffected by this announcement with regards to existing titles.
Most importantly, the Rock Band and Dance Central will continue to be worked on at Harmonix for the foreseeable future. We’re not leaving them behind.”
Also more rumours are being seen surfing the web; currently EA are top of the rumour chain to buy Harmonix with Activision and Microsoft following shortly behind.