They're talking about analog tuners... NTSC... or put simply; the RF connection. That's going away. FOREVAR! The new ATSC digital tuners still use ANALog transmission over UHF frequencies, but it's a digitally encoded data stream. MPEG2, in fact. Oh, and it looks like ass when things start moving. MPEG2 is one of the worst codecs EVAR and you'll see lots of blockiness and stuff when a TV how has flashing lights or quick pans. Not only that, but there is about 19.2 megabits per second in the MPEG2 stream, and a lot of stations devote some of that bandwidth to subchannels. For example we have channel 9.1 here in Denver which is the NBC HD feed coming from the local affiliate. There is also channel 9.2 which is the NBC 24 hour weather channel presented in standard definition. This eats into the HD bitrate making it look even worse! As bad as it is, though, it's still better than cable and satellite digital video and HD.
It's a damn good thing I don't care about watching TV.