According to Yahoo news there will be a live action Akira film made:

“The anime classic “Akira” is getting the live-action big screen treatment courtesy of Leonardo DiCaprio and a first-time feature filmmaker.”

and

“The new story, which DiCaprio will produce for Warner Bros., ideally would be a two-part epic, with the first movie coming out next summer. The action will move to “New Manhattan,” a city rebuilt by Japanese money.

It will mark the feature directorial debut of commercials veteran Ruairi Robinson, who sold the studio on his vision. The Irish native, who was nominated for a best animated short Oscar in 2001 for the sci-fi comedy “Fifty Percent Grey,” also wrote and directed a sci-fi short titled “The Silent City.”"
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The live action Dragonball-Z movie is already shooting, the live action G.I. Joe movie is in casting, there will be a sequel to the live action Transformers movie.

Meanwhile Warner Bros. optioned a live action Thundercats script a while back. I am fairly sure, though, that it won’t be as good as this old fan-made live action Transformers job:

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Which is also not as good as these real Thundercats outtakes (NSFW lang):