Non-Purism-employee, non-affiliated customer here: Dogwood on its way 
Edit:
I received my shipping alert email from Purism more than a week ago. From what I understand from previous batches, this means that shipping is imminent. I was so happy that close to three years waiting was coming to an end!
In addition to the phone, I wanted to get a spare battery right from the start, which turns out is currently not an option. I also would have preferred the PLS8 modem over the BroadMobi one. Purism offered me to wait until Evergreen, and I seriously considered doing that. But…I deliberately took a risk on this project in September 2017, and I wanted the phone I backed. So Dogwood it is.
However, because of challenges in my end, I have asked Purism to delay shipment about two weeks. So the phone will not be on its way in the real sense of the word until August, that was just in my enthusiastic mind speaking a couple of days ago. Things can still go wrong, and I’m sorry that I mislead you.