Same here I guess. I liked when Roku was the open streaming platform it pitched itself as being in the first place. Between blocking HBOMax and dragging their feet by saying features are already available, that are not, it’s beyond frustrating as a consumer.
I bought the Roku Premier 3920X, 2 weeks ago specifically to stream from my Macbook Pro running latest Catalina to the Roku device using Airplay (and have HBO Max (as "advertised", written up in CNET and actually looking at the How To instructions in Roku Help (https://support.roku.com/article/360057488733.) I have 9.4.0 build 4183-91. The is no AP2/HK menu option yet...I'd really like to avoid dropping $175 on another Apple TV. So I guess I'll hang on and continue to use a direct HDMI connection from Macbook to Samsung TV......I'm new to Roku so I trust they will deliver soon.....
I noticed my Ultra at 9.4.0 Build 4183 has Apple Airplay on it, by two Roku Stick Plus units have not updated to this build so they don't have airplay. The airplay works somewhat, but must be in beta. I can mirror my iphone and ipad, but videos are a challenge (some don't show at all) and anytime you exit mirroring, instead of going to Roku home screen you go to Apple airplay settings on Roku menu instead. Hopefully they'll have this working by the end of the year better than it is on this device and the others, as it does when I mirror from my iphone directly to my samsung tv.
I got a system update on my 2019 Ultra today. Version 9.4.0 build 4183. It now has Airplay video. Streaming the HBO Max iPad app to my Roku works great! Huge kudos to Roku for implementing this.
To the previous poster, instead of screen mirroring, I’m able to just hit the video cast button (or whatever that’s called) in the HBO Max app, select my Roku, and it sends the video to the Roku. I can then use the Roku remote to play/pause/etc., and can do other things on my iPad at the same time (don’t have to stay on HBO Max app). Picture and sound are great. Pretty great implementation in my opinion. I agree after you stop airplaying something it should just go back to the Roku home screen rather than the Airplay settings, but that isn’t a big deal.