Forza 3 worth buying now that Forza 4 will come out in 2011?

I feel like playing car games again, I played Forza 2 but never got into playing it much Forza 3 came out soon after and it defeated the point of me playing it. Now I am in a similar situation, wanting to get Forza 3 when Forza 4 will come out in 2011 :(

I will have 9 months tops with this game before Forza 4 comes out, is it still worth buying at this point? What do you guys think?

If your going to buy it, get the Ultimate Platinum Hits disc. It's 30 bucks, comes with all the DLC, and includes new stuff from the show Top Gear. There's tons of stuff to the point that you won't see it all in the 9 months, but you don't need to honestly. You'll go through the career mode in a few months so maybe it'd be worth it. For 30 bucks I'd say go for it. Hell I'll prolly pick it up.