When I spoke to someone a couple of weeks ago they were about half way. I'd estimate that they are now about 3/4 done.
The catch ups for any Huawei lines which never got Mk1 should commence as soon as all the Mk1 -> Mk2 updates are complete.
I have several questions still awaiting a response, my contact isn't always the quickest at answering things I'm afraid, but if I do get any answers then they come from a very reliable source who should know what he's talking about.