Here's an article about the Rivercenter Mall redevelopment, which has now started.
The article states any work on the Joske building is 18 mos away at least.
So far the only restaurant that has signed on is Fogo de Chao, but they're working on getting restaurant chains that are more regional (i.e., less generic).
It sounds like the Macy's is doing really well, unlike the Dillard's that pulled out a few months ago, so its likely to stay at the current location.
No mention of a hotel.