Total Film recently spoke with actor Idris Elba, who revealed that he has an overall deal with Marvel that could see him returning to the Marvel Film Universe as either Luke Cage or in a rebooted version of Blade. Here's an excerpt from the site's article:

"I wouldn't mind having a crack at bringing Blade back, personally." He says with a wry smile, echoed with a laugh from his manager. "But erm, there's a couple of things there that they have... Luke Cage is... very interesting."
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We reported last July that original Blade director Stephen Norrington and actor Stephen Dorff were developing a Blade prequel trilogy, although it wasn't clear if Idris Elba was referring to this project, or if he was merely joking about it. Luke Cage has been in development for some time now. We'll continue to keep you posted on any Marvel news as soon as we have more information.