After opening the game, I realize the GUI and buttons were off-scaled, what made them tiny and hard to see. When I enter in a world or create a new one, I can quickly see that the gameplay is somewhat laggy. For that powerhouse, I was very disappointed with the game's performance. I was expecting this bug would be fixed for this update, but unfortunately I was wrong.
PS: Before I wrote this complaint, I have talked with Mojang, and they said they didn't know whether I would be fixed for 0.7.0.