Also this one was steel frame built circa 2005. It was a continuation of a 3 storey building and they added 4 floors of steel frame.The Block on 4th is steel frame, only one I can think of
Steel also allows much lower labor cost due to the increased speed of construction. More often than not developers have already decided what material they would like, but sometimes we get to do a cost-benefit analysis. There's quite a few variables that drive cost these days.Steel construction is generally higher cost. It does save weight and allow for longer spans. Perhaps this building will offer more open floor plans with fewer columns.
CLT Floor Panels have emerged and increased in popularity a lot in the last 5 years. They can apply a lightweight concrete topping after installation for sound insulation, but it's optional. Typically they're used in "Short Span" applications (residential) but technology is increasing fast.