Without sugarcoating it: Chapter 16 of SAO Volume 15 will be delayed, by up to a week.
Unfortunately, my computer chose this particular time to die, and it now must be sent in for repairs. I am not sure of the potential time it would take, so I’m putting it as a week. I do have another machine I can translate on, but it will be considerably slower.
Sorry, SAO fans. This just happens.