Their response @15:04 (GMT +1) today:
New Response From [ Pete (Europe Support (Tech)) ]
Thanks for your email.
We are still pushing our developers to provide us with the source code and for the links to be added to http://developer.htc.com/
I realise this is not the answer you were looking for, but i will keep a record of your email and alert you when the download is available.
HTC Europe Support
My follow up:
Thank you for your response. I am afraid that 'pushing' your developers is not enough however. I understand from relevant web forums that you and your colleagues are giving similar responses to a number of other customers. HTC is legally required to provide the source code on request to customers in receipt of GPL binaries distributed by you regardless of your developers' wishes. Delays are not an option. Furthermore this product has been available for three months in the UK so you have already had plenty of time to prepare. Would you prefer that your developers and colleagues read about their non-compliance with the GPL on Slashdot?