Should i upgrade?
I have a Gigabyte GTX 1070 windforce OC and i'm thinking of upgrading to a 1080 ti when it comes out.
Also, i want to know if it's worth it removing an i5-6600k and swapping it for a ryzen 7 1800 or 1800x
6600k is perfectly good for most games. Ryzen is good for being a workstation as far as I know, so no don't swap it. What 1070 is good for 1080p 144hz gaming. If you want to do 1440p 144hz then go for the 1080ti.