Per Jon's Pipe Shop's Facebook group, there have been a couple of recent updates which indicate the storefront is on the move. The name of the group changed from 509 E. Green Street to 44 E. University Avenue, so it appears they will take up shop right across from the Illinois Terminal and right around the corner from Seven Saints and Mike 'N Molly's.
You can also see a pretty definitive update here as well. Very cool addition to Downtown, indeed.
The "old" storefront photo is from the Facebook group.