There will be potion effects, but not the potions themselves. Because of the new update, cave spiders will be added and they can poison you. Since poison will be one of the effects, the public guesses that it will be cave spiders. Other effects from potions will be jump boost and resistance.
Alex! The new female Steve. And more! Now, not exclusively for Minecraft Pocket Edition, you can change your skins. Also, another new added thing to Minecraft is boats! But, you will need the unique to Pocket Edition wooden oars.