What should I do since microsoft bought mojang? READ DETAILS?

So I'm a big minecraft fan with a bad computer. So I play minecraft console. I have minecraft PS3. I worked hard on all my worlds. So when i buy a ps4 I can transfer my worlds. Now here is the question part, I heard that Microsoft purchased minecraft. So would they make minecraft exclusive to there platforms. Or if they make a minecraft 2 would that be exclusive? I don't want to buy a Xbox one for 3 reasons, payed multiplayer(xbox live), no baseball game, and I can't transfer my hard worked worlds to the Xbox one. What should I do? Sorry for the long question.