Phase 2 of twinning between Monte Creek and Pritchard is supposed to go to tender this year, but the negotiations with the Shuswap Bands are still ongoing. Twinning as far as Hoffman's Bluff is scheduled for completion by 2017; whether that actually happens is largely dependant on the negotiations.
I agree about the bridges. There is another overhead west of Clanwilliam, and a narrow rail underpass that should be replaced as soon as possible. They would probably join up with the Clanwilliam project, so I see those among the next sections announced.
The Kicking Horse Canyon Project site mentions that Phase 4 can be implemented in phases, and given the cost, that's probably what will happen. I'd expect at least one of the phase 4 bridges to be announced soon, and maybe a project between Donald and Golden as well. It would be cool to see a third interchange planned at the westernmost intersection in Golden, allowing the TCH to be a freeway through the town.