An emerge -uD world produces the following blocker:

[blocks B ] <dev-lang/php-5.4.13-r1:5.4 ("<dev-lang/php-5.4.13-r1:5.4" is blocking app-admin/eselect-php-0.7.0)

I currently have 5.4.8 installed.

In eselect-php-0.7.0:

DEPEND=">=app-admin/eselect-1.2.4
!!<dev-lang/php-5.3.23-r1:5.3
!!<dev-lang/php-5.4.13-r1:5.4
!!<dev-lang/php-5.5.0_beta1-r2:5.5

However, as of the latest sync today the only ebuilds for dev-lang/php I see in ports-2012 are the following:

rw-rr- 1 root root 24827 Jan 31 20:48 php-5.3.18.ebuild
rw-rr- 1 root root 24580 Jan 31 20:48 php-5.3.20.ebuild
rw-rr- 1 root root 24582 Jan 31 20:48 php-5.3.21-r1.ebuild
rw-rr- 1 root root 24293 Jan 31 20:48 php-5.4.8.ebuild
rw-rr- 1 root root 24328 Jan 31 20:48 php-5.5.0_alpha2.ebuild

The commit message in upstream gentoo for eselect-php-0.7.0 says the following:

*eselect-php-0.7.0 (23 Mar 2013)
23 Mar 2013; Ole Markus With (olemarkus) +eselect-php-0.7.0.ebuild,
+files/70_mod_php5.conf-apache2, +files/php-fpm, +files/php-fpm.init,
metadata.xml:
Version bump. Resolving bug 323783, 389805 and 412913