There is one under works (and was talked about in this thread literally yesterday). But it won't likely come out anytime soon, as the author is swamped with all kinds of higher priority projects. It's a community project, like all the other Shadowrun sheet, not official in any way. I encourage you to continue the discussion in that main thread, and if you're really motivated to have a Roll20 sheet, reach out to the game publisher. If enough people express their interest for that, they might change their mid and have one commissioned.