When is STRETCH coming to PiAware SD card image version

I upgraded from Raspbian Jessie to Raspbian Stretch and there were no problems during installation or during normal operation.

However I did not upgrade by upgrade command from my stats page, or by “sudo apt-get dist-upgrade” or by “sudo apt-get upgrade”. Instead, I formatted microSD card and wrote Raspian Stretch Lite image. After booting, I installed Piaware 3.5.1 and dump1090-fa by package install.

Note:
While the microSD card was still in the card reader and plugged into Desktop, I very easily enabled SSH and configured WiFi as per instructions here:
Bake a Pi - Option-2, item 5(a) and (b)