They were looking into doing some affordable senior housing for a while.. no idea if it has progressed beyond conceptual planning. Last time I saw something about it was a while ago so they probably aren't in too big of a hurry. Seems like the churches have a lot of anxiety about parking still.
They likely pulled info from Costar, REIS or somewhere - that map is missing a lot. The Sun Building owners are looking at adding a parking garage and apartments as well. That's really the only other big thing I know of south of 8th right now/north of the BA.
A local developer is closing on the site that was going to be All Souls soon, will be ground up construction. Probably a year or two out for them to get everything together.
Sinclair building isn't on there, there's also the Arco building at 6th & Cincinnati that is being turned into apartments.
I'm really surprised that Brickhuggers have sat on the old Nordam site for so long. They've sold off just about everything but the Mayo so they should have the cash to do something.