No you're not missing anything.. The test card shows on itvHD until the HD program starts. As a result there is no epg for it..I've managed to get itvHD on my TM6900HD by scanning, finding 10150 and renaming it etc.
I've not been able to get any epg though and even their website is vague about upcoming programs.
The best information I get is from here lol, or am I missing something??
Sat 11th Oct - 4.30pm Football: England v Kazakhstan
programmes are subject to change