Yes, it is true, PHP 5.1.0 is finally out!

The packages and win32 binaries are available at: http://www.php.net/downloads.php

Some of the release highlights are:

• A complete rewrite of date handling code, with improved timezone support.
• Significant performance improvements compared to PHP 5.0.X.
• PDO extension is now enabled by default.
• Over 30 new functions in various extensions and built-in functionality.
• Bundled libraries, PCRE and SQLite upgraded to latest versions.
• Over 400 various bug fixes.
• PEAR upgraded to version 1.4.5
• 8 security fixes of varying "criticality"

The full changelog is here and the official release announcement can be viewed from http://www.php.net/release_5_1_0.php