Sony's reel of exclusive IP launching in 2017 does not include KH 2.8, OR KH COLLECTION, both of which are exclusive games to ps4 as of right now.
Both these IP run on unreal engine 4, and are likely to follow DQ XI onto the switch..... Huge deal if it happens! Just a theory from Mr leo-j ;)
KH3 is coming to X1 so that disqualifies is from the vid.
and the vid doesnt contain all the exclusives, that much has been known since it was published.
KH will most likely come to Switch but not for because of this vid... poor evidence indeed. And not, not a huge deal: Nintendo has gotten KH (and exclusive titles at that) before. It would be more surprising if they arent ported to the Switch