Plans for the project have changed since the original inception. The complex will now include Maria and Enzos Italian dining, The Edison, and the "underground" speakeasy. Walts was originally part of the plans but got cut/changed. The Edison is now hiring so that is a sign they will open sooner than later.I recall at one point hoping it would be open for my trip in late May (2017) - so, yeah, lots of delays
I think the big thing is that it is really 4 spaces in one and the plans seem to have changed a lot over time more than the construction crews (as work on this started before the refurb of Portabello I believe)