I sure hope it will be faster because in my own tests it's slower than Tcl. And I've tested at least two releases a year since october 2016 when the stable Rakudo came out.

Ruby 2.5 has a jit which uses the C compiler to generate dynamically linked objects. It looks more like a workaround but it produces fast code. Then there's Jruby, Rubinius, Truffle, mruby. Crystal too, which is a different language but yet similar. No need to learn Go. Just take your Ruby background and pretty much start using it for writing Crystal.