huge congrats on the weight loss. 11% is a respectable bodyfat level IMO. I would think that a bulking phase might be in order.
if you do a clean bulk and don't go overboard on the calories, you can indeed gain lean muscle mass with very little fat gained. you can go sloppy on a bulk and gain fat at an equal rate as lean mass too. similarly you can go on a cutting diet so harsh that you lose lean muscle mass rapidly.
a clean bulk means eating the same foods you've been eating to lose fat, and simply eating a little more of it, especially protein and complex carbs, so you have around 500 extra calories per day to use to build lean mass.