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Re:PHP 5.5.0 Alpha is now available by ricardo_ramirez on Wednesday November 14, 2012 @11:06AM (#4783883)
This is a good article for the differences: http://nikic.github.com/2012/07/10/What-PHP-5-5-might-look-l...

* New finally keyword * Support For list In foreach Construct * Password Hashing API * Generators * Scalar typehinting * Getters and Setters