We still dont have a firm release date for Torchlight II, but the sequel to Runic Games" 2009 fantasy action-RPG is still planned to come out later this year. The sequel will take a lot longer to complete than the first game and part of the reason is that Torchlight II has a ton more content than Torchlight 1.
In a post on the games official website, Runic has uploaded an infographic that show just how much content Torchlight II has compared to the original. Just a few of the examples cited include the original game having just 52 monster variants compared to 183 for Torchlight II. There are 27 boss battles in the sequel compared to just seven in the original. Torchlight 1 had seven unique areas to explore; the sequel will have 44 areas.
In the post, Runic Games" Travis Baldree states:
In terms of scale, Torchlight II is close to 4x the scale of Torchlight 1 as far as assets go, and probably close to that as far as playtime. Ideally, the multiplayer that everyone has asked for will further increase the longevity of the game (we certainly hope so!) These are all new assets as well (some monsters and weapons return from Torchlight, but they have all been recreated, or in the case of some individual weapons and shields, updated and repainted).
Source: Torchlight II website | Image via Runic Games