i need to ask one very last time if there will be any native Linux version of Scrivener 3 forthcoming in the very near future. If not, no worries. I 've heard the mantra before - “business model, business model, business model, business model…”.
Nobody from L&L said anything like “business model”, just to be clear about it. That was a bunch of off-topic backseat cheerleading for other operating systems, from what I saw. Our reason has always been logistics and the Windows version being behind. With one programmer, there was and still is to a degree a need to focus on getting the software done, before branching back out again.
So nothing soon, but I would never rule it out. I am a Linux user after all, and I would also like to some day use our own software on my operating system without virtual machines and whatnot. I also have very little interest in using Mac or Windows. The Mac was pretty good about 15 years ago (it even shipped with Apache and PHP out of the box, and you could write native Python and Ruby GUIs in their development package, to illustrate how far it has fallen); it was not too bad about 10 years ago, though it had lost most of what made it feel like a real UNIX; now though… it’s bad for how I use a computer, and getting worse every year. Windows, I don’t even know where to start with a system I can’t pipe a find command’s results through sed, or whatever, maybe even some script I wrote. How does anyone use that? 
Lastly, if you are outside the refund window of your purchase I can just about guarantee you won’t see a penny of a refund.
Refunds are 30 days, as stated in the FAQ, no questions asked. We don’t care if it’s because it doesn’t work on a platform that isn’t technically supported, or because you disliked the icon. That in combination with the 30 day demo means anyone should have more than enough time to figure out if it’s what they want, or if it will work on their configuration.