Hello Folken,
An ETA like “5 Days ago?” 
--> Univention Corporate Client (UCC) 2.1 released
Regards,
Jens Thorp-Hansen
Edit: I take it you mean the 64bit Release --> The manual still states “…The official UCC images are provided as i386.” - I will check that and inform you if I know more.
Edit2: I just got message: One of the reasons UCC2.1 is still 32 Bit is for example the citrix receiver, that is still 32 Bit. The underlying Ubuntu 14.04 can be 64 Bit without a hitch, but for UCC this is not planned.