Heard there was 16(?) new tracks, some new characters, some friends pointed out the feather item in a "wow haven't seen that in a long time" sort of way, etc. Seems like Mario Kart 8.5 to me. Definitely worth it if you like it.
Oh that's cool! I am sort of tempted to get rid of my Wii U for a switch, as I only play MK8 on my Wii u anyways, and the switch does look incredibly pretty. I guess I'll see how much the upgrade ends up costing.
Pretty cool that 4 player split screen is possible though! (8 with two switches) I thought it'd only be one (well, two half) remote which is what was massively putting me off the switch, but honestly it does seem a lot better now.