When doing a yum upgrade with selinux-policy-strict installed, the upgrade failed on a dependency error. I suspect this is because strict policy is being subsumed into targeted policy in F8. In which case maybe selinux-policy-targeted should obsolete selinux-policy-strict going forward in F8. In my case I had strict, mls and targeted installed and am running targeted, so I removed strict and mls and retried the upgrade and at least at first glance it seems to have worked. I doubt this will bite many other people, but I figured posting it to fedora-list might make the issue more visible to peole who might have the problem before they try a yum upgrade, rather than fedora-selinux-list where they might look after having a problem.