Burn Notice showrunner Matt Nix did a Q & A yesterday and talked about the guest stars this season. He also dropped some vague spoilers about the general direction of the show. The interview is here.

Well certainly in the finale, we have Garret Dillahunt coming and doing a pretty amazing bad guy. Let’s see, the guy who played Tony Almeida on 24. I’m completely blanking on his name. In any case, he is in the episode after this week’s episode and he is playing a bad guy who Fiona has a real connection to. Oh sorry, Carlos Bernard, yes playing a bad guy who is really sort of only removed from the characters on the show by— under other circumstances he could have been one of the team, but he is willing to do certain things that they’re not willing to do and that’s a divide that they just can’t cross. But he’s a guy who’s really committed to what he’s doing, really cares about what he’s doing. It’s a pretty devastating performance. He’s pretty awesome. I’d say Garret and Carlos Bernard are the ones that are upcoming that really jump out at me right now.

And it seems that we won’t find out if Keep Hope Alive will be picked up for another few months. From Entertainment Weekly:

Fox has loads of multi-camera comedy pilots in the works – including new projects from Greg Garcia (My Name is Earl) and the duo of David Kohan and Max Mutchnik (Will & Grace). Here are the network’s fall pilots, many are still being cast (decisions on which projects will be ordered to series won’t be made until the weeks leading up to Fox’s presentation to advertisers, which occurs this May in New York):
(…)
Keep Hope Alive (Greg Garcia). A single-camera comedy about a simple-minded 20-something man who is raising a daughter. Cast includes Martha Plimpton (Parenthood) and Cloris Leachman (The Women).