I think "massively" is relative here. If you compare Ruby 1.8 and Ruby 2.2, they are very clearly the same language, but the latter with many pleasant and usef

I think "massively" is relative here. If you compare Ruby 1.8 and Ruby 2.2, they are very clearly the same language, but the latter with many pleasant and useful additions - the sort of iterative improvements, in fact, that Apple are so good at with their hardware (for the most part). If you compare JavaScript from the 1.6 era to today's ES6... they hardly look like the same language.