The following story was not part of the original AT&T script. Disposing of Quickplay Media is a move that hammers another nail in the coffin of the operator’s U-verse IPTV service. It’s absolutely no coincidence that AT&T is selling off the technology arm in the same week that the Android TV-based AT&T TV launched across the US (see separate story in this issue) – paving the way for the migration of 20.4 million subscribers (U-verse, DirecTV and DirecTV Now) over to AT&T TV. Not only will the subscriber casualty count be substantial during this mammoth migration effort, but the technical challenges ahead are huge. U-Verse is a multicast IPTV service, while DirecTV is delivered via satellite broadcast, and the newer…