I don't think weather will be in PMMP at least in 1.6, cuz most of the features in 0.11 aren't even implemented yet xD
It is waaaay easy to implement mobs, LOOK! They have already implemented Zombies and Villagers! Off course without any Aritifical Intelligence, BUT THEY ARE IMPLEMENTED!
Whenever they want to! BTW: "If you want to get something in-time, do it by your self" Spoiler: If you don't know how to code... Learn PHP or don't mind to "Rush developers"