Google updates its algorithms several times in a year. In this sequence google rolled out its algorithm on May 4, 2020. The new core update is known as the May 2020 Core Update. This is Google’s second core update of year 2020. The first core update was January 2020 Core Update.
Google said “We are releasing a broad core algorithm update, as we do several times per year. It is called the May 2020 Core Update. Our guidance about such updates remains as we’ve covered before. Please see this blog post for more about that: https://webmasters.googleblog.com/2019/08/core-updates.html …”

Highlights of May 2020 Core Update
- It is the second core update of the year 2020.
- First core update was on January 2020.
- It will fully roll out in next one to two weeks.
- Whenever is an update there are fluctuations in keyword rankings.
- Some sites go up in google rankings.
- Some sites go down in google rankings.
- If any web site is facing a negative impact due to this core update. Google has suggested to follow its guidance at https://webmasters.googleblog.com/2019/08/core-updates.html .