The article does say for the seat coming up in 2012, so, who knows?
That primary is only a year away and there’d already be an announcement or some sort of semi-public floating of his candidacy and there’s been precisely nothing. Corker has a crapload of money and he doesn’t even have a Democrat name being mentioned now (only some unknown GOP challenger). Unless ex-Gov. Bredesen steps up, I don’t expect Corker to have anyone really challenge him.