The PHP Development Team would like to announce the immediate release of PHP 4.4.0. This is a maintenance release that addresses a serious memory corruption problem within PHP concerning references. If references were used in a wrong way, PHP would often create memory corruptions which would not always surface and be visible. The increased middle digit was required because the fix that corrected the problem with references changed PHP\’s internal API. PHP 4.4.0 does not have any new features, and is solely a bugfix release.
Does that mean I have to upgrade as soon as possible? Hmmm, maybe not… I need to know if all scripts and programs work well with this version and not just jump into upgrading. I want to find out from guinea pigs if upgrading is painless. :D