Panasonic 20mm f/1.7 II vs. 25mm f/1.7 review
The 4MP Phantom v2640 can shoot 6,600fps at full resolution (Dpreview).
E-M1II review at Stockografie
Zacuto GH5 Cage Indepth Review after 6 Months of Usage (Victor Bart).
6 Tips to Transition from Video to Photo (Explora).
FeiyuTech Vimble 2 Gimbal (Personal View).
Plenty of news on the facebook E-M1II group and the GH5 group.