Comment by solatic

Go hasn't had a history yet of breaking compatibility with earlier releases. Wait until Go 2 comes out, then we'll see how much Google wants to maintain long-term support. Two hints: it'll be at least as long as necessary for Google to port all of its Go 1 code to Go 2, and it won't be much longer than support for Inbox or Google Reader. And a further hint, Google will figure out how to port all of its Go 1 code to Go 2 much faster than you think, and your company will not be able to port its million-line Go codebase nearly as quickly.