LG's next Gram laptop could come in at under 1.18 kg to be lighter than the Lenovo Yoga C930 and even the Dell XPS 13 9365 2-in-1 while offering a bigger display than both. More official details will likely be unveiled at CES 2019 where the South Korean OEM will be on the show floor.
https://www.notebookcheck.net/The-2019-LG-Gram-14-may-be-an-ultra-lightweight-convertible-laptop.373746.0.html
Please 16 GB of RAM + 512 GB of SSD with a decent screen and battery life, and not extremely expensive (less than $1500). If so... I'm sold.
Unfortunately the 17" model won't be much different from the preceding 15". Hopefully the 14" 2 in 1 will receive some hardware improvements such as dual TB3 ports, front facing speakers and a better screen.