Will PBS Give Us HD Nightly News First?

Now, I'm not one of those who turn up their nose at the offerings of PBS HD just because there's actually more "Widescreen SD" than HD on there at present (they often amaze me with just how good they can make SD look). But I was happy to see this HD Beat report of a deal between PBS and Sony to expand HD production. Especially interesting was the fact that the "Newshour with Jim Lehrer" will be going HD next year. A bit more digging turned up this Yahoo Finance article that specifies Spring '07 for the Newshour's conversion. I haven't read anything yet that indicates that the "Big 3" are planning to beat that timetable with their nightly news, so this is pretty exciting.