Square Enix has revealed more details regarding the several technical improvements that will featured in the remastered version of Sleeping Dogs.
Sleeping Dogs: Definite Edition will feature a new native resolution, more detailed textures, longer draw distances, and a volumetric fog to represent the humidity of Hong Kong. A few gameplay tweaks have been made as well. Some of these tweaks include the difficulty in some parts of the game being changed and adjusted, and few improvements and changes to the game's camera, vehicles and physics.
Sleeping Dogs: Definitive Edition will be available on the 14th of October in North America, and on the 10th of October in Europe. Just like we had previously reported, the game will also have a Limited Edition, which will be available at no additional cost if pre-ordered. This edition will include a 28 pages artbook with concept art that inspired the game's visual direction and art style.
Source: SleepingDogs Forums