New Homebuyers stimulus

Well, B and I are new homebuyers and we were going to take the 2008 tax credit of $7500 that works as an interest free loan that you back back over 15 years ($500 a year). However, I have heard things in the news that Obama is looking at revamping this bill so that it doesn't have to paid back for homes purchased by the end of this year. Now, it sounded to me like this was going to possibly be retroactive back to a certain date (which has some people upset if they don't meet that cut-off point). Again, this is what I have heard (and read a bit). Anyone know more about this? That would be awesome if we didn't have to pay it back :)