Just wanted to throw this one into the mix because it's a question that comes up a lot.
Dungeons and Dragons Online has doubled in revenue (old post) and then doubled again just recently apparently. Because of Turbines success, many people are wondering if their Asheron's Call game will also be going F2P. (Well, actually all of these "F2P" games should really be called NRF2P since they're not really free to play now are they?)
Anyways, Turbine has already answered this question. The answer is, "there are no plans for it right now. I will however not say this won't ever happen".
DDO and AC were actually both discussed to go F2P, but AC was much more difficult to build an in-game Item Shop / new billing system. DDO was much easier, so it was selected as their first candidate. It was very experimental at the time too, so they wanted to make sure the project cost the least amount of money as possible, and the AC engine would needed to have been rebuilt from the ground up.
Asheron's Call is one of my favorite MMORPG's next to WoW, so I'm hoping it will go F2P sometime in the future. Rather than taking the same approach to so many other NRF2P games, I wish they could try something new..
That is, don't worry about rebuilding the game so that an In-Game Item Shop and Purchasing System can be implemented. Instead, make it web-based (and mobile) and focus less on the game engine and more on the web app's integration with their back-end databases. Those are where items, weapons, character stats are located after all. Maybe test out some in-game advertising.. or make it free / open-sourced for PR purposes. Would be a nice way to give players a little taste of MMO's and then transition them over to their other NRF2P games.
