Don't know,i suppose i'll have to pull the trig and buy an entry noTB 13 MacBook Pro then next Spring i could still sell it for a shiny 13 Quad core with 32 GB...
I'm in the same boat, I think I'll do the same: buy an entry nTB now and sell it when nTB Ice Lake MBP are released, probably on 2019... My doubt is wether buy the 256/8 or the 256/16 configuration...
Maybe the 8 GB of RAM will do for this 2 years. There's also the possibility of the nTB MacBook Pro not being updated anytime soon, or even being discontinued. In that case, I'd be glad purchasing the 16GB for only 220€ more.