Great news for Xiaomi Mi2: here comes the MIUI v6 with Android 4.4.4 on board!
The version is still in beta and above all it is not installable through recovery, but only through MiFlash, as it is a file with extension tgz. You will therefore lose both partitions, even if with TDB and, most likely, this ROM does not yet support the clockworkmod, according to what I read on xiaomi.eu thread.
At the moment it's all I know, I leave you with some pictures from the Xiaomi forum. If you try it, let me know what you think!