Any php6 users?

Just wondering if anyone is using php6 already. What new cool features do you like in php6, can you shared some new code examples from the new built in classes?

I personally have not tried it yet, only got to php5.2.9 and thinking to upgrade to 5.3 soon and the main reason for upgrading to 5.3 would be the new bult-in Internationalization extension. It really looks very useful.

Also I like that that fileinfo extension is finally included by default in 5.3

That's about all, and maybe the SPL object storage, but I have not thought of any situation where object storage would be useful.