Took a look at Java 7, and more precisely, project coin, the other day. Looks pretty cool to me. Will add things like underscores in numbers (you can write 1000000 as 1_000_000 to make it more human readable) and strings in switch. There are some things I miss, like language level collections, which to my understanding was considered but moved to be possibly included in java 8.
OpenJDK: Project Coin
This is just a part of java 7, though, but it still seems awesome to me. I cannot wait to get my hands on it :cool:.