Just to clear up confusion, the Thinkpad you linked is an older model. There is a new one with the Elite processor OP talked about.
From everything I can tell though, Lenovo has been very active getting Linux ready for ARM Thinkpads, so I’d assume it could be coming soon.
As of right now, there’s not much available for the X Elite processors.
I did actually buy the Yoga laptop with the X Elite from Lenovo about a month ago. I’m not sure I’ve ever had a better experience with Windows. I can leave the thing in standby mode for days and see maybe 4 or 5 percent battery drain. If I’m using ARM native apps, I can use it for 8 hours without charging easily and get through a work day with about 20 to 30 percent battery to spare. With x86 apps, it does use a bit more power, but battery life is still pretty good. I’d estimate 8-9 hours before totally dead.
Hopefully development picks up more on the Linux side because I can’t wait to see how much better the battery life would be.