Zend has officially announced the opening of a public beta of a new product of theirs called Zend Server. Here's what the Zend Developer Zone has to say about it:
Zend Server is designed to be a all-in-one installer to get setup quickly with Apache, PHP, Zend Framework, and a PHP optimizer. It also comes with an admin UI to configure PHP easily. It uses native installers for various operating systems, and is available for Windows, Mac OS/X, and Linux (.deb, .rpm or tarball).
The Server comes in two flavors - the full edition and a lighter "CE" edition. The server comes with built-in features like page caching, system and website monitoring and support (with hot fixes). You can find out more about this new offering over on the Zend.com website.