Whilst the August roll-up update was formally called Windows 8.1 Update 2 this November roll-up could be considered Update 3 and are basically like mini service packs. It should be available via Windows update but the standalone is also available from the links below:
This update includes the...
error codes
hardware support
installation
known issues
maintenance
manageability
microsoft
performance
printer support
reliability
rollup
sd card
security
service packs
troubleshooting
uefi
update 3
usbdebugging
virtual machines
windows 8.1
