The ones on the GTI Street look a bit diffrent, as said, its REALLY hard to tell as its such a poor angle. The ones on the ‘Wörthersee 09′ look like BBS CMs.

You will be able to buy them aftermarket for your MK6. The BBS CHs are the wheels that the MK5 ED30 came with.

I honestly have no idea how VW work, but at a guess Id say unless its on the options list you wont be able to get it. Theres no harm in giving your dealer a call and asking.