Style looks to be "fintech modern"

. Not sure how distinctive it is for what may now be the world's largest fintech company but for Jax I guess it will grab some eyeballs. Unfortunately, buildings today like this are addressing potential security threats and thus taking on fortress-style attributes that make them far less friendly to the abutting public areas. The riverfront elevations also look to be taking into account the rising sea/river levels inevitably on the way during the lifespan of this building adding to the "walled off" effect.
I can't tell if the garage has retail on Riverside Avenue but given the renderings don't show any retail signage on the building, doesn't look good for that.
I think the only space that will truly be vacant and for lease Downtown will be in the Prudential building.
The Prudential building may yet fill that space quickly. I have heard that Interline/Home Depot Pro, a major tenant in that building, is looking at more space in the future so if this opens up they could be a candidate for filling it. They recently pulled permits for significant renovations in their existing space so maybe they plan to stay awhile there vs. move.