I don't book flights specifically because they're listed as offering live television but if my itinerary shows it, I expect it. I've had several flights this summer swapped out from the 75X (ex-Song with TV) to the standard 757...either from a few days out to a few hours before...and it's getting annoying. Now comes the internal announcement that Delta is going forward with flat screen TV's in the overhead aisles to replace the older, ray tube TV's, on the majority of the 757 fleet (which doesn't have Live TV). This must mean that prior statements to put in-seat IFE on every 757 is no longer the plan. And, more importantly to me, that new first class seats with in-seat power are no longer in the works. I'd like to see Delta make more of an effort for consistency here. I mean this is the airline that wants every ticket counter wall to look exactly the same; that wasted no hours pruning the NWA name and logo from the system. Where is the same zest for brand consistency for the in-flight product? Most of us are aware of the nearly dozen seating layouts for the 757 fleet...there are also several different amenities strewn across the fleet as well. Perhaps Delta ought to pull all of its amenities choices from the flight search functions. Flying domestically, especially on the 757, is a guessing game on whether the listed product will be the actual product.