JP, if you recently upped your cals as well as carbs, and added cheats, I would say alot of that 'weight' is water ... It will taper when you body gets 'use to it' ... i.e. instead up 8 lbs a week, maybe 4-5 lbs every 2-3 weeks, and so on, but it is impossible for it to be all muscle .. I'm sure you know that already. Hopefully some muscle, little fat gain, strength increases and of course water.