MySQL 5.7 Community Server End of Life/Support

Is there any official document that outlines the date till which MySQL Community Server 5.7 will receive security updates/patches? I see that page 20 of this document from Oracle outlines Premier and Extended Support end date for MySQL 5.7, but I am not sure if it is talking about Community Server Edition or MySQL Enterprise Edition. Is there a relation between extended support end date listed in the document and the date till which MySQL 5.7 will receive security patches?

Also, are security fixes released to Community Server first and then hardened and released to Enterprise edition of same MySQL version? Or are they released to Enterprise edition first and then to Community Server edition?

Short version of my question: Till what date will MySQL 5.7 Community Server get security patches? :)

Thanks

As per MySQL documentation here the below you can find the life cycle for each version of application MySQL

Current releases

Release        Release date              End of life

MySQL 8.0      April 19, 2018       
MySQL 5.7      October 21, 2015          October 21, 2023   
MySQL 5.6      February 5, 2013          February 5, 2021

All releases

Release        Release Date            End of life  

MySQL 8.0      April 19, 2018       
MySQL 5.7      October 21, 2015       October 21, 2023  
MySQL 5.6      February 5, 2013       February 5, 2021  
MySQL 5.5      December 3, 2010       December 3, 2018  
MySQL 5.1      November 14, 2008      December 31, 2013 
MySQL 5.0                             January 9, 2012

For further your ref here and here

StackExchange Database Administrators Q#234261, answer score: 13