The first few floors above grade will be a bit slow as they need to tie into the existing structure but it should be several stories above grade by the end of summer, probably more given the amount of manpower available right now.
Nice shots.
You can see the middle section of the old hotel where they've filled in the walls with concrete - they had been brick before (with adjacent original walls in concrete) - presumably to allow hallway extension into future expansions.
Pic by me taken today.
The cut out down the back of the old building (which appears to be being filled in) may have been for a new elevator core or staircase.
Will they be putting anything on the roof? A pool would be really neat, as I think that the roof might get decent sunlight during part of the day due to the low height of the art gallery and robson square.