My Thinkpad X1 Carbon 2nd gen is still going strong 3 years later, but this 5th gen is pretty tempting. Main questions: - Are these "up to 15.5 hours of batte

My Thinkpad X1 Carbon 2nd gen is still going strong 3 years later, but this 5th gen is pretty tempting. Main questions: - Are these "up to 15.5 hours of battery life" numbers purely theoretical? Even brand new, my 2nd gen only got about 6 hours of normal usage. I run Ubuntu so maybe these power saving tweaks are the result of closer hardware integration with Windows? - The mobile broadband option (Qualcomm Snapdragon X7) is intriguing, it would save me carrying around a separate hotspot. Has this worked for any Linux users? What carrier do you recommend? - Any reports of the Wigig Dock working on Linux? Pros that I can see: - Real function keys! The adaptive touchpad on my 2nd gen is awkward and silly -- can't believe Apple followed their lead on this. Good riddance. - That the 5th gen is even smaller and lighter boggles the mind. My 2nd gen is already ridiculously thin. After 5 years of hauling 5-8lb T4x models around NYC my back was killing me, and I was probably on the verge of permanent physical injury. The X1 was a godsend. - Same old Trackpoint I know and love. Not for everyone, but a mouse on the home row + vim is ergonomic heaven for me. Never change, Thinkpads! Cons that I can see: - Looks like almost the same display as my 2nd gen, a 2560x1440 WQHD IPS. A small bump up in nits but that's it. Viewing angles are better than on older laptops, but I still can't read my screen in bright environments, and it gets gummed up with debris and smudges way too easily. Apple continues to dominate in this dimension. - Matter of taste, but the Silver design feels like Lenovo is trying way too hard to look Apple-y.