Yeah, blue did get a big boost with the release of M11. Mana Leak was reprinted (I myself don't know which set it originally came from), as were the Planeswalkers and many other cards.
I personally like the Titans they released in M11. Frost Titan would be a good addition to a blue/white control deck. For six mana (two blue and four colorless) you play a creature that forces your opponent to tap a creature on their field when it's played or when it attacks. In addition, any spell your opponent plays that targets Frost Titan is automatically countered unless they pay two more mana. So unless they play spells that wipe the board like Day of Judgement, it'll be hard to get rid of if you can counter their other stuff.