The Tab S2 has 4:3 ratio and i think it is a very good move by Samsung as 4:3 ratio is way better for stuff like web browsing, playing games, reading books, and productivity tasks(office work, Video editing) lots more.
And the 16:10 ratio is only good watching videos and not soo good for anything else.
It is AWESOME that Manufacturers like Samsung, Google are now realizing that 16:10 ratio is not good for tablets and now moving to 4:3 ratio for tablets as it is a way better ratio for tablets.
Anyway i can't wait to get my hands on one and play around with it!!