My timeline so far (2nd renewal):
DACA Expires: 10-6-16
Renewal Sent: May 10th
Received I-797C: May 16th
Biometrics Scheduled: June 25 (completed June 25th)
__________________
Initial Approval: 11/13/12
1st Renewal: 10-7-14
2nd Renewal: 10/12/16
3rd Renewal: 5/16/2018