Whenever Google feels like it
and... you are right!!!
last update was in current month (may).. now may be in september .. Right...
Likely November (6months) However, they don't set a date and can update it at any time. In the past the minimum has been a 3 month period.
May be on september OR november.
I would say in November.
depend on google.
In Nearly 3 Months Last One Was On May Nex One Probaly On August
google feels than
its depend on google
Unfortunately, only google knows what google is going to do
Its depend on Google. basically September OR November