In late 2007 Novell laid off almost all the developers of AppArmor  with the aim of having the community do all the coding. Crispin Cowan (the founder and leader of the AppArmor project) was later hired by Microsoft, which probably killed the chances for ongoing community development . Crispin has an MSDN blog, but with only one post so far (describing UAC) , hopefully he will start blogging more prolifically in future.
Now SUSE is including SE Linux support in OpenSUSE 11.1 . They say that they will not ship policies and SE Linux specific tools such as “checkpolicy”, but instead they will be available from “repositories”. Maybe this is some strange SUSE thing, but for most Linux users when something is in a “repository” then it’s shipped as part of the distribution. The SUSE announcement also included the line “This is particularly important for organizations that have already standardized on SELinux, but could not even test-drive SUSE Linux Enterprise before without major work and changes“. The next step will be to make SE Linux the default and AppArmor the one that exists in a repository, and the step after that will be to remove AppArmor.
In a way it’s a pity that AppArmor is going away so quickly. The lack of competition is not good for the market, and homogenity isn’t good for security. But OTOH this means more resources will be available for SE Linux development which will be a good thing.
-  http://en.wikipedia.org/wiki/Mandatory_access_control
-  http://www.nsa.gov/selinux/
-  http://en.wikipedia.org/wiki/Apparmor
-  http://news.cnet.com/8301-13580_3-9796140-39.html
-  http://blogs.msdn.com/michael_howard/archive/2008/01/17/crispin-cowan-joins-the-windows-security-team.aspx
-  http://blogs.msdn.com/crispincowan/default.aspx
-  http://news.opensuse.org/2008/08/20/opensuse-to-add-selinux-basic-enablement-in-111/
-  http://etbe.coker.com.au/2008/09/04/opinions-facts-apparmor/