Announced back in January, it’s now here.
As usual, the Weibo link is to a locked forum post [Bing Translator].
And I’m having trouble believing this is for “all models” of their tablets. They use CPUs from Intel and Allwinner. Those are vastly different architectures — x86 and ARM.
If anyone succeeds in installing this, leave a Comment telling how it went and what CPU your tablet has.