I bet. Hopefully they improve the battery on the flag ships. As close to 4000mah as they can get. Tech should allow for 2 full days between charges in my opinion. Idc if the phone ended up being a bit thicker.
I’m noticing the new 12.9 drains a bit faster than my old 10.5 but it’s not a big deal. I’m always near a charger and it lasts at least 8+ hours of continuous usage of browsing, light gaming and media consumption. It certainly is better than my iPhone Xs Max, which is to be expected (not saying max is bad, it’s good... iPad just lasts longer).