i contacted Orange yesterday to upgrade from my TytnII, only to find out that they have discontinued the Touch HD the only WM phones they could offer me was the Touch 3G and the Touch Diamond (both of which are now OLD)
after thinking about this, i reckon they've done this to help boost the new Nokia 5800 they have exclusively.
To me it makes no sense to ditch the HD and keep the older style WM phones.
off to o2 me thinks to an iPhone