Practically, I'm most excited about the XPS 13 9370. I'm pretty sure it's going to be my next laptop, it's most perfect for me. The Gore heating insulation with the crazy Turbo Boost, the Windows Hello camera, intel core 8th gen, and the form factor is amazing.
The XPS 15 2-in-1 is interesting, but honestly it's not for me. It's a tad too expensive, and honestly I don't like 15-inch 2-in-1s, too unwieldy