So wow. Those nuts really did work!
CBS has ordered 7 episodes for mid-season next year! Season 1 will also be rerun this summer and released on DVD, among other things, to help generate more viewers. This is so awesome!
I think that what saved the show is that Jericho really didn't have awful ratings. According to this list, it was 48th out of 142 network shows for the season, with an average of 9.5 million viewers. Compare that to Friday Night Lights, which had only 6.1, and Veronica Mars, which had a mere 2.5. I know that since CBS is a ratings giant with all of its CSIs and whatnot that Jericho was doing relatively badly. But that's a lot of disappointed viewers.
Anyway, 7 episodes isn't much, but hopefully they can gain some momentum and increase that order. And if not, then maybe the writers can prepare for a real series ending. Regardless, I'm pretty ecstatic that Jake Green and co. will be back!