Anyone brave enough to bet which ones are going to turn out big ?<p>Swift has a big potential in the sense that it's backed by Apple, and looks like Objective C reimagined for Apple's purposes.<p>Rust has Mozilla backing, and it's already popular around here, so I won't elaborate.<p>Extra points for naming languages which will succeed despite not being initially corporation-backed.
Always a fun discussion when someone calls a language old. "ColdFusion? That old language? You should use Javascript or Ruby or Python and get with the times!"