Grinding Gear Games announces Path of Exile is now officially live after seven years of development and nine months of open beta testing, saying the free-to-play action/RPG is also now playable through Steam. The PoE website has details on the launch and what's new in version 1.0. Looking forward, they already have a lengthy post about plans for upcoming balance changes, and express this commitment to adding new content:

Our core development team scaled up from 20 developers to 33 during the Open Beta and we're planning to continue to grow it so that we can keep up a fast pace of Path of Exile content development. We're planning on releasing updates every two weeks, which will include content such as new skills, support gems, Unique items, microtransactions, league modes, balance changes and bug fixes. Our long term plans revolve around expansions each four months that add substantial content or headline features (such as new trade systems) that are timed with the rotation of our four-month challenge leagues.