*minus the north half of the southbound platform at Kennedy, which will be where the SRT guideway is currently.By the end of the year Unionville, Milliken, Agincourt, and Kennedy will be complete with brand new stations. What a transformation. Next up: Danforth, grade separations, and electrification. Hard to imagine East Harbour GO occurring quickly.
But yeah the Stouffville line will be fully double tracked as far as Unionville, except for the short segment through Scarborough Junction. They will easily be able to run every half hour or better to Unionville. Then again, given how much of a struggle it's been to get them just to run the service they already ran last September, I don't know what timeline we can expect for actual improvements.