Not only has it stalled, it now appears certain desire users must first install an update before getting froyo, however that is not available at this time !!
From orange support site......
For HTC desire users running software version number 1.15.61.10 HTC has recently advised us you will first need to update your devices to 1.22.61.1
HTC will be making the 1.22.61.1 update available early next week.
In my opinion both Orange and HTC have failed at multiple stages with this project, clearly the infrastructure in place is totally insufficient for this kind of role out, no dynamic server provisioning is being used with lack of bandwidth and demand being the given reason, the package size of this update is very small compared to that of other client/server applications that use patch/OTA software management with far fewer clients millions against tens of thousands. This will most likely boil down to how much orange has 'paid up' to use of HTC's available infrastructure, judging by the fact orange is one of the last to even get off the blocks it cant be one of the biggest spenders.
Well done Orange, clearly you don