Fable Legends sera Free To Play
Any PC or Xbox One player will be able to download the game for free. There will be a whole story's worth of quests at launch, with more to be released episodic-style every few months, and continuous updates.
There will be no paywalls, no limited game time, no horrible "energy bars" or "gems" or whatever that take time to recharge. There will be 4 heroes available to play at any one time, and they will rotate every 2 weeks.
Then, if you want to keep playing a character, you can either wait for them to come back into rotation (with all your XP and equipment intact), or pay to unlock them permanently.
You can pay either with earned in-game money or real money, and you can also pay for cosmetic items; everything gameplay-related can only be earned through play. Same goes for villain players: different villain monsters will rotate every few weeks, and you can pay to unlock them permanently.