2020 Spring發佈計劃路線圖

Spring Framework建議儘快升級至5.2+，2020年末後，活躍維護分支將只有5.2.x和5.3.x

資料來源：https://www.oschina.net/news/112295/spring-cloud-roadmap-2020

https://spring.io/blog/2019/12/23/spring-cloud-roadmap-and-hoxton-and-greenwich-maintenance-and-eol-announcements

https://spring.io/blog/2019/12/10/spring-boot-2-1-x-eol-november-1st-2020

https://spring.io/blog/2019/12/03/spring-framework-maintenance-roadmap-in-2020-including-4-3-eol