Tom Cruise says it is definitely happening. 

He's even reportedly got a director in place for it. Now another cast member has weighed in as Val Kilmer took to Twitter to declare that he's ready for Top Gun 2. 

There hasn't been any plot details for the film released yet so we've no idea if Iceman would even feature in a Top Gun sequel. They couldn't do it without Kilmer at least making a cameo though could they?

Val if you're reading this please and are definitely going to be in the movie please wear that t-shirt in at least one scene.