See the FAQ, as this is a fairly anticipated question. There's some benefits to having some token to separate let bindings and statements, so that the grammar is unambiguous, and it doesn't matter too much which token is used (monkey emoji anyone?) However, I think it may be possible to eliminate delimiters altogether eventually. Because we have the `refmt` program which can convert and beautify between two arbitrary versions of the syntax, we'll be able to automatically upgrade your code if we do find a way to eliminate delimiters unambiguously. Stay tuned.

Why? It has more benefits that downsides.

I think the only complains we can do at the moment are the switch from '<-' to '=' for mutable records and from '->' to '=>' for functions. But we will see how it will evolve