You really think so? I think that implies that it remains unsuccessful, which (given its current trajectory) seems unlikely.
I think it's more likely that in 10 years, Go will be the new Java. Big companies (besides Google) will use it, Hacker News will hate it, consultants will write books about it, and language geeks will be trying to replace it. Recall that Java also had a no-nonsense "do more with less" approach. The problem is that once a language gets popular, it's inevitably pushed into more and more domains where it's unsuitable, folks need to learn it to earn a living, and all the folks who define themselves by what languages they know will move on to greener pastures.
The only way a language can remain cool for decades at a time is to "avoid success at all costs", which was actually one of Simon Peyton-Jones's goals for Haskell (which has remained remarkably true to that ideal). Otherwise Stroustrop's Law kicks in: "There are two kinds of languages: the ones nobody likes, and the ones nobody uses."