I just stopped by. The gal at the register said 'end of June'. One of the dudes doing the work said 'end of July'. All I know is that 6/7 date I was given...whether June 7th or 6 July are both kind of unlikely.
There is definite progress and looks to be 8 slots.
The white boxes had been wrapped up in the last set of photos I took (on the SWVA Tesla owner facebook page).
The end of July sounds reasonable. There had been a gap in work at one point, and the weather later didn't help I'm sure.
Here was the original facebook message saying 6/7. Then again, the YEAR wasn't specified