Another hardware change is that the lens cover is no longer removable. This will be a drawback for those who use things like neutral density or color filters, but a GoPro spokesperson tells me there's a solution for that in the works. The upside is the glass is reportedly twice as strong, so it's less likely you'll need a replacement. We can be sure someone, somewhere is going to test that claim to the limit. There's also no longer an HDMI port, you'll need to buy an accessory for that (mentioned later).
I am so disappointed at GoPro, they have the worst customer care, with multiple frauds, including the 24hrs contact support for GoPro plus customers which is fake. Refund Frauds I experienced, they claim PayPal payment takes 30 days to refund, which PayPal has denied and said the refund should be instant. Inefficient administration costed me lots of time and money wasted on talking to them trying to resolve issues made by them. Delayed delivery. Untraceable order ID.
Are GoPro accessories interchangeable?
HyperSmooth, last year's flagship feature, is back and improved. HyperSmooth 2.0 (as GoPro is calling it) promises even better stabilization and now works across all resolutions and frame rates. This is great news, as you'll no longer have to decide between the type of shot you want or stabilization (including slo-mo). There's also a "Boost" mode that offers even more stable shots than the (now improved) default setting -- the trade-off being a little extra image cropping. More on this later.