A bit of a random one, but I just noticed in arnold renders change log, that they updated the intel denoiser to get access to their gpu based denoiser instead of the post render cpu version, which I believe we still use in Karma?
Anyway, I'm sure this is already on Sidefx' radar but if for some reason not, I just want to point out it exists and of course would be lovely to see in one of the daily builds soon.
GPU denoising in Intel Open Image Denoise: The Intel denoiser was upgraded from version 1.4.1 to 2.1.0, which brings real-time denoising through NVIDIA and Intel GPU support. (ARNOLD-12547)
If it makes sense to do a proper RFE for this I will but I suspect this is known info and that it would be overkill?
Yup, I peeped this as well - there's also a multi-session GPU render feature in this Arnold release. I'm currently installing it to see if it works with the new H20 Clone feature (which would be freakin awesome!).