You might have to his escape as soon as it loads (to stop it redirecting you to a login page), but you can look at the prototype map interface here.
No Spookfish imagery as far as I can tell. Just ArcGIS online satellite basemap. Property boundaries seem to be hosted on MapBox, and aren't national, which seems like a temporary arrangement to me. Right-click tools (area, distance, export) don't function. No time slider. Location search is unfiltered.
In this state it's kind of meh, so I hope this isn't representative of the final product. I actually don't think it is (it's obviously not meant for public consumption yet).
This might indicate that commercial release is a bit farther away than we hoped, though. That's total speculation btw - it's also entirely possible that the front end is being developed on another server and this version is nowhere near its current state.
SFI Price at posting:
5.0¢ Sentiment: Buy Disclosure: Held