<a href='http://ru3.php.net/distributions/php-5.0.0RC3-Win32.zip' target='_blank'>http://ru3.php.net/distributions/php-5.0.0RC3-Win32.zip</a> - 7.5 мега, под маздай
<a href='http://www.php.net/downloads.php#v5' target='_blank'>http://www.php.net/downloads.php#v5</a> - ссылка на страницу с исходниками, патчами, версиями под линуху и всё такое...
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Изменения (извините, переведу чуть позже):
* Moved the PDFLib extension to PECL. (Wez)
* Added MySQL 4.1.2-alpha and 4.1.3-beta support to MySQLI extension. (Georg)
* Added support for dumping private/protected properties to var_dump(). (Andrey)
* Added count() support for COM arrays. (Wez)
* Added Firebird/InterBase UDF source that allows PHP functions to be called from SQL (Ard)
* Changed user error handler mechanism to relay to built-in error handler if it returns false. (Andrei)
* Changed class type hints for function parameters to not allow the passing of NULL values. (Andi)
* Changed tidy_node to tidyNode and removed tidy_exception. (John)
* Fixed ip2long() to return FALSE if an IP address passed to this function is not valid. (Derick)
* Fixed memory leak in memory manager. (Andi)
* Fixed problem with exceptions returning from include(). (Dmitry)
* Fixed bug #28641 (Instance of Interface). (Marcus)
* Fixed bug #28430 (Extending mysqli class). (Georg)
* Fixed bug #28311 (Transparency detection code is off by 1). (Ilia, pikeman at pikeman dot sytes dot net)
* Fixed bug #28304 (Missing bounds check inside imagefilter()). (Ilia)
* Fixed bug #28300 (Userspace stream/filter names forced to lowercase). (Sara)
* Fixed bug #28287 (stream_*_register() not calling __autoload()). (Sara)
* Fixed bug #28267 (php_image_filter_contrast calls gdImageBrightness). (Ilia)
* Fixed bug #28239 (No results returned on SOAP call, no error given). (Dmitry)
* Fixed bug #28205 (num_rows property for statement object). (Georg)
* Fixed bug #28161 (COM: Array style properties could not be accessed). (Wez)
* Fixed bug #28125 (ArrayObject leaks when accessing elements). (Marcus)
* Fixed bug #28100 (NULL parameter support for mysqli_ssl_set). (Georg)
* Fixed bug #28099 (ArrayObject doesn't implement ArrayAccess). (Marcus)
* Fixed bug #27929 (SPL: change visibility of ArrayIterator::__construct). (Marcus)
* Fixed bug #27640 (memory leak of registered_zend_ini_directives). (Dmitry)
* Fixed bug #27063 (SPL: ArrayObject does not handle PPP correctly). (Marcus)
