A survey was released on the Capcom-Unity site, one which specifically mentions the Link functionality. Link would allow players "to play with other players across the world via a PS3 connected to the internet." Sounds just like the newly announced feature, no?
And the title of the game featured in the survey? Monster Hunter Unite. While Capcom reps refuse to comment on Monster Hunter Unite at the time, we think our guess that it's a localized version of 2G is a solid one -- guess we'll have to wait to find out more.