A little more analysis needs to go into the last post. I perfectly understand there are people out there who like Scala - I don't understand it (why they like it), but they do and good for them. But I think the Scala world is split in two, those who are simply searching for a better Java that is statically typed, and those who actually think Scala itself is a sterling idea.
I think those who are looking for a better Java that is statically typed now have competition in their choices. A language very much like Java, interoperates almost perfectly with Java, can be eased into simply with Java and has a dynamic option if you want it, vs something that is really quite different. I just think Groovy++ will slow down Scala's adoption. People may examine both and decide Scala, I suppose that could happen.