Deep Sleeper: Comic Book Resources talks to Ed Brubaker about Sleeper: Season Two and Gotham Central, but mostly Sleeper:

"My biggest hope, though, is that we get more stores to just start carrying the book at all. From what I've heard, it sounds like very few stores were racking this book each month. I thank all the ones that were, a lot of whom did really well with it, but I want the stores we didn't get the first time around to get onboard this time. There's no reason now for anyone, retailer or reader, to not buy the book if they're interested -- The first Season will be out in Trades, and the new #1 will hit stores the same month. If that doesn't help, nothing will, probably."