The new changes I'm looking forward to are the password hashing API, scalar type hints and generators.
I'm also looking forward to 3 things that AREN'T going to be there: register_global, safe mode, and magic_quotes
I'm also looking forward to 3 things that AREN'T going to be there: register_global, safe mode, and magic_quotes
PHP in particular seems to have a lot of bad home brew implementations out there, so it'll be nice to have a better default.
[1]http://www.php.net/manual/en/migration54.incompatible.php