According to ZuneInsider the only player which will have TV out is the Zune 80 and of course the current Zune 30 players. With one difference: the new Zune 80 will have DVD quality TV out while Zune 30 will remain at 320x240

Zune Insider now has it that only the flagship Zune 80 will boast outputs of 720x480 at 30fps or 720x576 at 25fps without transcoding, and the two flash-based siblings will be going sans TV out altogether. Tough break, but at least you've got one more tidbit to base your purchasing decision on, eh?