HEVC has been working for months (H264 is/was the hold-up). 4K is working now (not 4K60, but that's will be along eventually). HDR is complicated but will come. Upstreaming will take time.. but getting it all working comes first. We aren't going to do a formal Pi release for LE10 out of an abundance of caution (we have hundreds of thousands of Pi users) but things are moving along nicely..
thanks again for the update! so obv i misunderstood.. this sounds a lot more promising
as soon as HDR is in i suppose users will be pouring in so i get the "cautious approach" to releasing. anyway looking forward!