I am not sure how it will end up looking, but there's definitely plans to add greenery as part of Union Square, and I'm sure they'll modify the shoreline to at least make it nicer, albeit there may not be access to the water.
Both Union Square and the old board mill are part of stage 2 on the Ontario side, which is supposed to be built from 2023 to 2027.
The Tesasini park, along the Québec shoreline, is supposed to open in 2022, and the
renders show some nice water access.