I don’t want to say no outright, but will say this: Sketch was originally built upon OS X features and frameworks, such as Quartz for example, and all-in-all is a very typical Mac app. It’s not just the case of hiring a Windows developer and porting the code. These frameworks and other things will need to be completely re-written so they can be cross platform and that’s something that would take years of work. Then there’s the user interface. It will need to have its own consistent design language so it neither favours OS X or Windows, but a middle ground that is familiar to both users. If we were to do this, the whole product would suffer as we couldn’t continue to work on the OS X version during this time.