I ask this every year, and as it turns out, this one won't be an exception! Has Dashboard finally been axed in Catalina? If it still exists, I would imagine that it will take a bit of a hit, since certain Widgets run in 32-bit Dashboard processes, but I would think that at least the first-party ones could still function. I've found that I have barely used Dashboard during the past year. It's definitely time for me to let go on this one (thankfully)!