Based on his announcement, it seems like he might be leaving sports altogether, with the way he talks about all the great sports moments he's had a chance to cover over the years and pursuing another opportunity "in that wake of history".
http://www.twitlonger.com/show/n_1sqk482
On the other hand, these sorts of vague announcements are usually the result of a no-compete clause in the person's contract, which would usually be because he's moving to a competing network/station.
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Doesn't Ontario have municipal elections coming up in the fall? Maybe he's following Millions' lead and running for office.