First, I should mention that it's impossible for me to express how excited I am about this bit of news. I had up until now been considering picking up Dini's Streets of Gotham or Yost's Red Robin when they launched in June in addition to my new pull of Detective Comics but those plans have been thoroughly scrapped. Johns is undoubtedly the best super-hero comics writer out there today. I don't mean to say he brings more thought or intelligence to the table than the likes of Moore or Gaiman but the man knows how to tell some of the most absorbing, fun and all around entertaining super-hero stories. I followed his run on Teen Titans in trade, where in addition to being exposed to his wonderful writing, I was also introduced to Superboy. I never read so far as Superboy's death (though I do own it, and intend to get to it sometime) but I did really like the character. He was an realistic, adolescent Clark Kent-- Mostly good natured but entirely a teenager. It also helped that Johns knows how to write teenage characters; with complete respect for the personal issues they're facing.
I couldn't be more pleased about Superboy getting his own title (although it seems like it may deal with the Legion of Super-heroes as well). He hasn't had one since the 90s, I believe, when he was wearing that awful leather jacket and red tights. The guy looks a lot better in jeans and a T, yeah? I wouldn't doubt the ill chosen costume from the 90s wasn't one of the contributing factors to the series decline.
So let me break this down: Superboy is coming back to the spotlight, Geoff Johns is writing a new title, and the art is gorgeous. If you're not reading any Super-hero comics and you want to-- I'd suggest you pick this up when it rolls around in August. If I were a tad more bold I'd say I insist. While you're at it, you might want to look at Rucka's Detective Comics in June, too. Superboy is back, and goddamn if I'm not going to be reading that comic.
Edit: So apparently I can't read. That's not too surprising because I barely manage to write coherent sentences. I initially thought Action would be relaunching for this project, but it turns out Superboy will be appearing in Adventure comics-- thanks to the commenter for setting me straight on that-- so there's that. I edited this sucker up to avoid confusion because apparently there are people actually stumbling onto my blog (Creepy).