No, the tax credit is not just for first time buyers anymore! I still hear people asking about this tax credit and confused over who qualifies and who doesn't. Move up buyers purchasing a primary home can qualify too, up to $6500. The IRS site will explain in detail the qualification requirements for move up buyers.
For many who have taken their homes off the market for winter, I have to ask "WHY?" They are missing the opportunity offered by the government to create activity in the real estate market this winter- and it is working for those who are playing the game.
In Keene, NH we currently have 16 pending/contigency properties and 91 active listings. Our active listings have recently dropped slightly partially due to sellers removing their listings from the market for the winter. If I were trying to seller a home between the price range of $115K and $360K this year, I might reconsider this move and keep the home on the market followed by a reassessment of the price.
True it's a tough market for sellers right now, but if you're in this price range there is proof that activity levels are not dormant this winter. Best of luck!