虽然官方说
There is no comparable upgrade procedure for Windows. Doing a new installation is necessary.
但依据往年的经验，Windows 下的滚动升级依旧可行
只是CTAN的镜像站还没有同步完成，连欧洲的 dante 等主力站有点儿太慢了
再等等……
【 在 snoopyzhao (只打酱油，不兼职) 的大作中提到: 】
: Hi everyone - I've moved the tl22 and mactex22 images and other files to
: the public areas on tug.org. They are making their way around CTAN.
: Please give it a couple days to reach the mirrors.
: ...................
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FROM 117.152.203.*