Robinson announced that he was quitting DC as of September's issue.

Source: Twitter

James Robinson announced on Twitter today that he was leaving Earth 2 as of September's as of yet unsolicited issue. While it's unclear whether it means that Earth 2 #15 or Earth 2 #16 is his last issue, Robinson also confirmed that the move also meant he would no longer be writing for DC Comics.

So as of today I am leaving Earth 2 with Issue #16.It's been a blast.Man, it's a lovely day.Think I'll take Rex to the beach. — JamesDRobinson (@JamesDRobinson) May 17, 2013 Yes, this also means I'm no longer working at DC Comics.Best wishes and regards to Dan, Geoff and everyone. — JamesDRobinson (@JamesDRobinson) May 17, 2013

Robinson is a class act, so details are sparse as to the reasons he walked off the book. But as Earth 2 has been one of DC's strongest titles and also the company's most diverse, he'll definitely be missed. Frankly, Earth 2 was one of a handful of DC titles I actually looked forward to reading, and it was solely due to Robinson's worldbuilding coupled with Nicola Scott's art. Considering Robinson was hinting at a second Earth 2 book even a few weeks ago, the sudden walk off is almost certainly a result of editorial mismanagement.

What a crummy way to end the week.