I'll believe it when I'll be in one of the trains. This has been promised for years, along with other major rail overhauls, that have never materialized. This time it seems like it may have a chance of being constructed, but so far it's also just money dumped into consulting firms. And for multiple years still, without anything being physically constructed.
I'm unfortunately a Via Rail user. I'd like to get excited for this project but the proposed route is not going to help me with my current needs along the corridor. I'll still need to use Via Rail trains, they'll still be late and I'll still miss my connections. They'll still promise to take bikes in a few years without actually taking bikes. They'll still charge $75 for a last minute 60 km trip, in economy. They'll still only have a few trains a day.
When the federal announced Alto/high speed rail, it apparently forgot about the high frequency proposal from Via. So I guess things will continue to be shitty on that side.
I'd really really like to get excited for any type of new transit, but rail projects and services in Canada are so abysmal, that I prefer to have very very low expectations. If it eventually gets built, I'll happily be wrong.