It means 6 weeks have passed since the last Firefox release, and they are releasing a snapshot of whatever features they were able to make stable in that time.

It means 6 weeks have passed since the last Firefox release, and they are releasing a snapshot of whatever features they were able to make stable in that time. Also, it will not be an extended support release, because 32 % 7 != 3 (every 7th release is an ESR starting at version 10).