It seems that BetaFPV release the STL file for the Beta85X and the first batch are sent !
I uploaded the STL file to thingeverse for easy modification and remix:
But of course BetaFPV provide directly their canopy by using SLA resin if you buy the Beta85X directly. It seems a really improvement for the weak canopy they used in the past, so pretty cool !
Some photos of TPU one via Steven Sept