The compiler rewrite that's meant to enable REPL (along with some cool metaprogramming features, I hope) isn't targeted at 5.0, but a still later release. Though you can get a C# REPL in Mono today.
Really? That sucks. (The post 5.0 thing sucks, not Mono). With REPL and Async (and the other metaprogramming stuff) I was thinking 5.0 was going to be their biggest release yet.
