Nginx 1.4.1 has been released on May 7th 2013, with the fix for the stack-based buffer overflow security problem in nginx 1.3.9 – 1.4.0, discovered by Greg MacManus, of iSIGHT Partners Labs (CVE-2013-2028).
As a consequence, Dotdeb’s packages of Nginx 1.4.1 are now available for both Debian 7.0 “Wheezy” and Debian 6.0 “Squeeze” (amd64/i386).
As usual, if you want to know which module has been included in each Nginx flavor, you just have to look at this document.