The 15-story RISE at Riverfront Crossing has the 2nd tower crane up and is progressing.
Unfortunately, it's rumored that the once 15-story 316 Madison Street project has been reduced to 7 stories due to cost overruns. I'm no expert on high rise construction methods, but what's been installed so far certainly doesn't seem substantial enough for 15 stories.
12-story Hilton Garden Inn
Seaman's Center at University of Iowa
Progress on a few other random apartments
A proposal for a "boutique casino" would fit right across from the downtown convention center, hotel and arena complex. The project could also renovate two historic office buildings next door.
This 10 story annex to a historic insurance office building has now started construction.