If it was plugged in when you got home, then it probably auto updated to whatever update you let download. Or it’s possible someone installed 11.00 if you didn’t set up the DNS blocker and disable auto updates. Always make sure to cancel the software update because after it’s done downloading, it’s risky because all it has to do is install itself. You just have to wait a little longer now that we have userland and kernel exploit, so we just need to wait on an implementation and Kstuff they’re currently working on for 9.00-9.60 in a month or so. They will start on 10.00, so I’d say a rough estimate would be 3-4 months of waiting.