Any major changes to the game engine, visual rendering, texturing as thus far?
Yes, we've had a lot of changes to the game engine. Many optimizations, better lighting, and many new features have been added. PvE has also allowed us to look much more at how our environments tell our story, so we've added many features that help with that. In addition, since the hardware landscape has changed a lot since Overwatch was launched, we're taking the opportunity (both on the artist side and the technical side) to beef up our high end features and assets.