A fourth RuneScape game is under development using Unreal Engine. Engadget reported the announcement; here's what's confirmed so far.
Early reaction from reviewers:
staff@engadget.com (Jackson Chen), writing for Engadget, noted: "Jagex says it will reveal more details about the game, tentatively named RS4, next year."
This page will be updated automatically as more details or reviews become available. For the original announcement, see Engadget.