HBO Home Entertainment, in conjunction with Warner Home Video, has announced Treme: The Complete First Season for Blu-ray release on March 29, 2011. This series from the creators of The Wire is set in New Orleans, in the aftermath of Hurricane Katrina. The first season's ten episodes will be presented in four discs.
I don't really understand anyone who says that something is impossible to release in HD because it is shot or 'natively' in HD. Like every show in the past few decades have been shot on film and thus could be made HD. The biggest problems are for all the shows which were edited in video with the special effects, like X-Files, Star Trek spin-offs, Buffy, etc. Those would require a huge amount of time and money, but even they aren't impossible to upgrade provided they can get hold of the original film.
So The Wire would not be impossible to be released in HD, but, yes, it looks unlikely. Certainly the creators don't seem to be too fussed about it, and having it done in 4x3 HD might (unfortunately) not be liked much by the studio. However, I do think that it could be very nicely done in HD and, if it were done properly, would retain the grittiness of the source material - I get a sense when hearing what the creators of the show have said that it would lose some of its gritty realism as though putting it in HD means it'll suddenly look like Zodiac or something. If its done right, I don't see who'd have cause to complain.
The Sopranos thing is really annoying me though. Were sales for season 1 that bad? It, along with True Blood, is HBO's biggest hit, no? I don't understand the logic of not releasing that, but then releasing the less-popular and cancelled Deadwood (which, don't get me wrong, I'm very pleased to have.) Maybe they're working on a Complete Series boxset and it's taking some time. I haven't seen it all the way through yet, but have decided to probably stick with digital copies until a BD release comes out, despite the cheapness of the DVD set during the Christmas sales over here in the UK! Hopefully the fact that Treme is a new show means they still have space on their release schedule to do a catalogue release sometime soon, and that this will be The Sopranos.
As for Treme, I've yet to watch more than the first episode, but I'm sure it'll look great.
Eastbound & Down will work as a three season thing, as Danny McBride and Jody Hill said even before the show was renewed for a second season. It would make sense to release a DVD for season 2, then a Blu-ray box set with the complete show.