Before it was the community editions, now it's the beta edition produced in a large quantity but still the same performance.
I have the community edition and I asked myself the same question. A performance boost would have been nice. I would love and pay to have a better performance some day.
It took 2 or 3 years for the Pinebook Pro to appear after the original Pinebook. I can imagine a phone is a lot harder to manufacture and support in software. I would be open to buying a Pinebook Pro, if I needed a laptop now. I will just wait patiently what happens with the next Pinephone :)