I mailed HTC after getting fed up of constantly pressing that 'check now' button
"I cannot give you an exact date you will get the update as the server will send the update to 30.000 devices at a time, then move to the next batch. It is impossible to say when you will get the update. The update is currently being sent to all unbranded models of this device if you have a branded handset this will take some time more to come through to you.
The roll out process takes 6-8 weeks. You could receive the update anywhere in this time, providing you are unbranded."
Let's just hope were in the next batch
Sent from my HTC Sensation XE with Beats Audio Z715e using xda premium