参考链接：https://github.com/spring-projects/spring-boot/tags
下图为各版本维护时间：
spring-boot v2.4
spring-buildmaster released this on 13 Nov · 482 commits to master since this release
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.4-Release-Notes#new-and-noteworthy
New Features
待更新
spring-boot v2.3.0.RELEASE
philwebb released this on 15 May · 3547 commits to master since this release
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.3-Release-Notes#new-and-noteworthy
For full upgrade instructions and new and noteworthy features please see the release notes.
New Features
待更新
spring-boot v2.2.0.RELEASE
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.2-Release-Notes#new-and-noteworthy
spring-buildmasterreleased this on 17 Oct 2019 ·6503 commitsto master since this release
New Features
待更新
spring-boot v2.1.0.RELEASE
spring-buildmaster released this on 30 Oct 2018 · 10866 commits to master since this release
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.1-Release-Notes#new-and-noteworthy
New Features
待更新
spring-boot v2.0.0.RELEASE
spring-buildmaster tagged this on 1 Mar 2018 · 14392 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.0-Release-Notes#new-and-noteworthy
New Features
待更新
springboot v1.5.0.RELEASE
spring-buildmaster tagged this on 30 Jan 2017 · 20057 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-1.5-Release-Notes#new-and-noteworthy
New Features
待更新
springboot v1.4.0.RELEASE
spring-buildmaster tagged this on 29 Jul 2016 · 21635 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-1.4-Release-Notes#new-and-noteworthy
New Features
待更新
springboot v1.3.0.RELEASE
spring-buildmaster tagged this on 16 Nov 2015 · 23756 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-1.3-Release-Notes#new-and-noteworthy
New Features
待更新
springboot v1.2.0.RELEASE
spring-buildmaster tagged this on 11 Dec 2014 · 26431 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-1.2-Release-Notes#new-and-noteworthy
New Features
待更新
springboot v1.1.0.RELEASE
spring-buildmaster tagged this on 11 Jun 2014 · 27753 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-1.1-Release-Notes#new-and-noteworthy
New Features
待更新
springboot v1.0.0.RELEASE
spring-buildmaster tagged this on 1 Apr 2014 · 28431 commits to master since this tag
参考链接：https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-1.0-Release-Notes#new-and-noteworthy
New Features
待更新