brit bus driver, the aircraft are not MRTTs, they are A310-300s. But, since they're sitting at Dresden already, conversion could start pretty quickly.
They are (unless someone has already grabbed them) FedEx-owned at present.
Both the CF and Luftwaffe are currently operating 2 x A310 MRTTs each (CC150T in CF service). As excellent in the AAR role as they always were in the AT role! The Luftwaffe have just completed a deployment of EF2000s from the Baltic to India and back; apart from one EF going u/s in Abu Dhabi, everything went well.
Last time I checked, there were around 8 x A310-300s available which could be converted to MRTT standard; most have CF engines but the FedEx ones have Pratts.
As for 'bringing FSTA forward'? Well, one pair of wings has now been built but that's all so far.......