This 3GB patch is said to introduce general bug fixes as well as make improvements to performance, where gamers who would want to indulge in online matches will first need to download the patch. Of course, not everyone will have to sit through a 3GB download, since the patch size will vary between systems, but 3GB is the ballpark figure, so do make sure that you have performed the necessary preparations beforehand.
This particular patch is said to fix load times in matchmaking and optimize network bandwith, not to mention open connectivity to play nice with the recently released match three Evolve Hunters Quest app. [Press Release]