XenServer 6.5 is currently not supported . If there will be a field demand to support it - we will take it under consideration 
Hi,  from the documentation (1.31), I see that XenServer 6.1 is supported. However, we're on 6.2 and intending to migrate to 6.5 in the near future.  I'm waiting for the 29th, so I may be able to take a look at the software itself...
What about XenServer 6.5?