There's been teaser art for years. And even as recently as 2010, word that its creators were talking with publishers about releasing it. But in sad news for TimeSplitters fans, it seems the 4th game in the series is going absolutely nowhere.
A Crytek UK spokesperson chatting with CVG has said the studio, formerly known as Free Radical, had "spent all of the development budget on buying monkeys."
Pressed for something more serious to put on record, they added "No, it's not in development."