[kevkrom]

I know he appears to be running but has he actually announced it?

There are sorts of fundraising, filing, and reporting rules that apply once you officially announce a run. It makes sense to delay that as long as possible, as long as you can still build up the infrastructure you're going to need.

[Diogenesis]

In the case of Bishop Janus Willard “RAT” Romney,
the delay comes from trying to maintain BOTH positions.
THAT, and being a lying statist, is the Romney-Way(TM).