TYPO3 4.4.13, 4.5.11, and 4.6.4 were released today. Versions 4.5.11, and 4.6.4 are maintenance releases that only contains bugfixes. Version 4.4.13 includes a security fix for a “XSS vulnerability in BE-User Admin module” and bugfixes.
More information is available in the release notes for 4.4.13, 4.5.11, and 4.6.4.