We evaluated the latest samples last week and have approved them for production. Estimated delivery is 6-8 weeks, so we hope to be shipping by the end of the year. Both Early Adopter and Production Cases are now available for pre-order.

We were able to provide a fan option for both Cases. We tested with this 25mm 5VDC Fan which provides ~10 Deg C temperature reduction when pushing into the case and is silent.

Maker Focus PI-FAN

I'll publish complete thermal results for the Pi 3 & 4 later this week.