I see new firmware on the site but not sure what the actual differences are: Antminer-S9-all-201711171757-autofreq-user-Update2UBI-NF.tar.gz

Seems like the list of fixes/changes is the same as what it was for the August 2017 firmware. Does it make sense to upgrade a couple S9's that have been running for a few weeks on the August 2017 firmware to this new one or leave as is?