Even if they're DTV (they've been on DTV in the UK before, so this is certainly possible), they may not be advert-free, widescreen OAR, or anamorphic. In fact, they never have been before, so I wouldn't hold my breath.

The best English-language broadcasts remain the Fox 480p, widescreen OAR, anamorphic broadcasts of Empire and Jedi. No ANH, and there were ad breaks every few minutes. Still, they're not too bad. A few glitches (originating from Fox, not the affiliates), but decent most of the time.