Hi! After much reading and research, we have sent off our I129f petition today. Let's hope things go smoothly!
Here's an update of the average processing time of all cases received every considered day and approved within the next 182 days, as to 12/08/17.
Since the average time has been so high from mid-May up to June and (for now) only 182 days can be considered (from 06/09 to 12/08), you can expect slightly higher times in this period.
I'll try to update in 7-10 days to see how it is evolving but, as you can already see, the tendency doesn't look very good. Sorry guys.