Google has released a broad core algorithm update. Some webmasters already noticed changes in their rankings. Here’s Google official tweet:
This week we released a broad core algorithm update, as we do several times per year. Our guidance about such updates remains the same as in March, as we covered here: https://t.co/uPlEdSLHoX
— Google SearchLiaison (@searchliaison) 1. August 2018
Danny Sullivan added on Twitter that the update should be finished by the middle of next week:
A few days. Say by middle of next week, should be fully rolled out.
— Danny Sullivan (@dannysullivan) 3. August 2018