Alice is a very exciting new language from the ML family. It offers many interesting approaches to well-known problems and extends ML with meaningful features such as a functional model for multithreading. What particularly fascinates me is the discussion of lazy evaluation, futures and promises in the Alice tour - that hit exactly the nerve, as I had just finished building my own package for Python (lazypy). I immediately extended it with futures. An OS X version of Alice is also planned - I'm really curious, as the screenshots of the environment suggest quite a lot of promise. Previous ML implementations have tended to be rather austere in their user interface.