Currently, the latest version of app-text/txt2tags on portage is 2.4. The 2.5 version has been released a few weeks ago. See the 2.5 release info here: http://txt2tags.wordpress.com/2008/07/26/7-years-of-txt2tags/
+ 15 Feb 2009; Patrick Lauer <patrick@gentoo.org> +txt2tags-2.5.ebuild: + Bump to 2.5, closes #234844