Little League is a Peanuts-esque webcomic about the Justice League (via Comics Worth Reading). The tone is alternately sweet, funny, and poignant. Because it's hosted on Tumblr it's a little awkward to work through the strips in chronological order. Start here.
Arron Diaz of Dresden Codak (previously previously previously) has created new versions of both the Justice League and the Legion of Doom, complete with new origin stories and powers. I especially dig the explanation of kryptonite - scroll down to Metallo for the scoop. :
DC to reboot entire universe. Will debut same-day digital distribution of 52 new #1 comics in September. [more inside]
The 99 (previously), the Islamic-inspired superheroes which have met both praise and somewhat batshit controversy, are crossing over with the DC Universe.