I couldn't detect any from looking at sprus that were shown at the 2007 German Toy Show.( see IPMS Spielwarenmesse International Toy Fair 2007 )
Studying the new box art description, you will note ammunition is not mentioned.
Unfortunately, It is highly unlikely the kit will include projectiles; AFV Club has just announced those items for their 1/35 version. They have a habit of providing ammo & improved tracks after the initial product release.
Building on the subject of AFV Club, it would appear we have every reason to expect additional 1/48 releases from them. Word has it they can not keep up with production demands for their little 251C. Hopefully sales will provide the cash flow, and optimism, for more 1/48 kit releases.
I am sure an AM manufacturer will come out with the ammunition once the kit comes out. Seems a perfect item to make for it. Unfortunately it means an additional cost.
My grandfather was given some suppositories by his doctor. A week later, he returned to the surgery, and told the doctor 'Those pills you gave me last week were rubbish. They tasted aweful, were impossible to swallow, and even once I'd got them down they didn't do me a blind bit of good. I might as well have shuvved them up my ar*e....'