Kyle Field is undergoing phase two of a $485 million redevelopment, the most significant portion of which is the complete tear-down and re-build of the west side of the stadium. This GIF takes you from the demolition of the old west side through site preparation and construction of the new structure, as of March 24, 2015.
All images are from the Kyle Field construction cameras. You can see GIFs of the renovations completed during the 2014 offseason here and here.
By popular demand, here's a version with the personified Kyle Field implosion added in.