Engadget posted up a briefly leaked document from T-Mobile.de that indicates costs and charges for T-Mobile Germany unlimited data plans for the iPhone. There are three tiers -- a 200MB tier (M), a 1GB tier (L), and a 5GB tier (XL).

They're not as unlimited as I'd like, and it looks like they cap your data speeds at about 25% once you pass your download limit, but it's a start -- the other option is to charge you out the nose for exceeding your data limit.

I think my new favorite bit about the international iPhone is how it forces carriers (or operators or whatever) to have a conversation about what manner of data plan and minutes plan the iPhone will be paired with. That, and the promise of a fully unlocked iPhone someday. My two new favorite bits about the international iPhone....