We filed a K-1 Fiance Visa petition with USCIS (California Service Center) on 04/27/2017 and received the USCIS approval notice on 9/25/2017:
K-1 Visa Client Approval
USCIS Filing Date: 04/26/2017
Received I-797C Notice of Action for I-129F: 04/27/2017
Received I-129F Approval Notice: 09/25/2017
Processing time from Filing with USCIS to Approval: 151 Days
I-129F USCIS I-797 Receipt #: WAC-17-903-08771
Source: h1b now