过去几年，各个新版本相继解决了在各种系统中运行WP出现的各种问题。但是把这些修改都移植到2.0.x 是一项很艰巨的任务，可能会带来新的不稳定因素和bug。WordPress开发组不得不权衡稳定性和兼容所有的修改，在两者间做出艰难的决定。另外，越 来越少人使用2.0.x了。在对WordPress的新功能（以及插件提供的功能）进行了测试 ，发现它们很多都不支持旧版的WP。
WP2.0.x 不能坚持到2010年，是有点让人失望。不过考虑到其失败的最大原因在于WP新版本大范围内的安全改善，2.0.x 退出舞台还是值得的！
附原文：
The WordPress 2.0.x Legacy Branch is Deprecated
The WordPress team had initially committed to maintaining the WordPress 2.0.x legacy branch until 2010. Unfortunately, we bit off more than we could chew—the 2.0.x branch is now retired and deprecated, a few months shy of 2010.
Many of the security improvements to the new versions of WordPress in the last couple of years were complete reworks of how various systems were handled. Porting those changes to the 2.0.x branch would have been a monumental task and could have introduced instability or new bugs. We had to make hard decisions between stability and merging in the latest security enhancements. Additionally, far fewer people stayed on the 2.0.x branch than we anticipated. I take that as a testament to the new features in WordPress and perhaps even more the features offered by plugins, many of which don’t support older versions of WordPress!
I’m disappointed that we weren’t able to keep the branch maintained until 2010, but since one of the big reasons for that failure was the massive scope of our security improvements for the newer versions of WordPress, 2.0.x doesn’t die in vain!
Tags: WordPress, WordPress Release