Peter has talked about the depth of Tiger's features in his book in this thread
Here I extracted some informative words from Peter below... Hope it might be useful for you to know about the depth of Tiger's features in his book..
.......To cut a long story short, I put a great deal of effort into covering EVERY single new feature of Java 5, with one exception. The sole exception is metadata tags. This is a potentially powerful feature that will let you label code in a way that persists through to the binary and can be detected by other tools..........
that thread was useful !