As seen
http://www.riftgame.com/en/promo/freetoplay.php there. It appears to be the most free free to play I've ever seen. Only limitation on completely free players APPEARS it's going to be 2 character slots per server and 3 bag slots and no access to the 4 expansion "Souls" (Sorta mini-classes). And if you own the base game or expansion those limitations are removed.
Tried a little bit of it myself so far (You can start playing now with the "Trial" version which lets you play to level 20) and it's basically a straight WoW clone, but a well made one. Has some public quest nonsense in the form of the rifts, and seems to have some relatively neat player housing (Pocket dimensions with placeable items) and I have no idea on the PVP. Almost exactly what I wanted from a free MMO, scratches my unseemly occasional WoW urges and doesn't require $15 a month every time I wanna mindlessly grind.
On top of that, there's a promotion running from "Raptr" which will give you the base game, expansion, and a month of play time for free.
http://raptr.com/game/Rift/rewards/rift-storm-legion
Got my free copy from that so I should be completely set once the game goes free to play. Quick rundown on what to do:
Step 1: Download the Rift trial and make an account. It doesn't need the full game downloaded to start playing since it'll stream and download shit in the background.
Step 2: Download the Raptr desktop app and make an account.
Step 3: Launch it and have it "Scan for games". You want Rift to show up under the "My games" button on the desktop app. If it shows up, it sees it.
Step 4: Leave Raptr running and launch Rift. The launcher/patcher doesn't count, you have to actually be able to hit the "Play" button and get to the character select screen
Step 5: Watch the lower righthand corner as Rift starts. You should get a popup telling you a shortcut to activate the Raptr overlay. If that shows up, Raptr's correctly watching it.
Step 6: Either play or idle Rift for 16-ish hours to reach the "Experienced" rating on Raptr. Once you do, go to the promotion page while logged in and get your videogame key.
Optional Step 7: Delete Raptr and burn the garbage account and garbage email you made to get the key.
Raptr nonsense wasn't too big of a pain in the ass and Rift itself seems like a good WoW-style MMO, so I'm pleased. Hope it works out well for them 'cause that free to play model seems generous as hell. Even better than STO's which was the previous most free MMO I'd seen.