If Square Enix is looking to turn "Definitive Edition" into a brand, it's doing so with varying results.
The visual improvements to the two year old version of Sleeping Dogs are not as discernable as they were in the convincingly overhauled Tomb Raider, a game that had a much shorter release gap between its original and Definitive versions. The improvements in lighting and textures in Sleeping Dogs are only noticeable through side-by-side comparisons, which is disappointing. Conversely, Sleeping Dogs: Definitive Edition serves as a testament to the quality and high standards originally set by the PS3 and Xbox 360 versions from 2012. And let's not forget the PC version, which boasted an exquisitely high frame rate, whereas the Xbox One and PlayStation 4 versions are locked at 30 frames per second.
For better or worse, Sleeping Dogs: Definitive Edition is not that much different from your standard issue Game of the Year Edition. That is to say, you'll be treated one of the best open world crime adventures in recent years, and the game still looks great, if not dramatically different on its new hardware.