On my most recent visit to Warhammer World, January 2020, the life size Rhino was still guarding the entrance to Warhammer World.
On a previous visit to Warhammer World back in 2012, then the life size Rhino was right in the middle of the car park. When I went in July 2018, it was (as it is now) by the entrance to then revamped and new(ish) Warhammer World entrance.
THQ, who had commissioned the Rhino for their Dawn of War video game “gave” the Rhino to Games Workshop who then gave it a repaint in Ultramarines colours.