I hate to bump an older thread (but rather than create another thread for the same thing, I thought it would make sense to reply to this one. But I completely agree! I use Linux (Manjaro) at work as my primary OS, and I recently came across a news article referencing the buying of Yoyo games by Opera and Opera GX and so I played around with Opera GX a bit over the weekend and I really liked it. I, like the op, find it highly upsetting that Linux users are left out to test, help develop, and provide feedback on features for the browser. More software really needs to support Linux and I don't mean just Ubuntu, or RedHat either.
Come on Opera, make this happen. It's built on top of Chromium isn't it? Is there really Windows specific stuff that can't be ported over? I know cpu and memory are handled a little differently, but if you're working within the Chromium framework already and Chromium works on Linux (and most of the non-core OS stuff is going to be javascript anyway), I feel like it shouldn't be that hard since Chromium already runs on Linux. Are you guys really modifying the code on the C/C++ side that much that this is out of the question? At least, announce that you're working on it or something...