If the mention of MySQL not being bundled with PHP anymore scared you (in the previos note from the Zend Weekly Summary), then you might want to take a look at this note on the php|architect weblog.

As already mentioned on Sterling's blog, future versions of PHP will no longer ship with built-in support for MySQL. There are a couple of reasons why this is happening, but the decision to unbundle has been primarily due to a change in licensing policies on behalf of MySQL, who has released the latest version of their database access libraries under the GPL. Because PHP is released under a BSD-style license, which is not compatible with the GPL (it is, in fact, much more liberal in its permissions to use the code in other applications).

It goes on to talk about how this is really just the MySQL folks "tightening their grip" on the PHP world, and forcing them to get a special license from them. Personally, I don't think this is a very good idea. MySQL and PHP have been one of the powerhouses of the online world, and anything that would jeopardize that relationship should be seriously thought about for a really, really long time...