No patch, you got booted because the person in charge of the maint. got asleep and when woke up, 30 seconds before maint time, spammed all the server shutdown notices, in the wrong order, and then proceeded to shutdown the thing right away.
Nothign has happened, biodrones love it when the company makes what it pleases, normal customer have complained a bit, but biodrones drowned them right away.
Edit to add: I was already in bed and warm, but its not a good way to run business.