Elder Scrolls Online

The reason people say this is because it happens to basically every mmo. Except for WoW.
It doesnt get enough subs to be that profitable so it goes f2p and just adds a chash shop and they end up making more.
I played ESO during some of the stress tests and honestly the game is pretty underwhelming.

"I heard many "rumors" that ESO may be without a subscription fee after a while"
This only happens to huge MMOs that turn to be unsuccessful. There's no way to tell if it's going to end up being F2P since it's not out yet.

DAoC is old, has less than 10% of its peak subscriber base, and is still subscription-based. Eve is still evolving, has a steadily-growing userbase, and is still subscription based. It's perfectly possible to pitch a non-free MMO, if you have compelling materials decently packaged. I'd take any rumours with a pinch of salt. There's no harm seeing how it pans out. If you're keen on it, don't let the chance of it going F2P turn you off. Purchasers usually get significant benefits if the game flips to F2P, since the last thing they want to do is alienate their existing userbase trying to get more people.

Nope, not gonna happen.

Found this the other day...
I don't know.
I really hope it isn't subscription free. I doubt it will be F2P. If it is just pay once and you have it, I may get it. If it's subscription, pretty much no chance.

most games that go F2P put some heavy restrictions, for example in AION you cant make trades or open shops without premium

I'd hope for something like GW2, making it 60,- to buy, without an annoying monthly fee.

I still think subscription then go F2P as fallback is a really bad idea.

Best way would be to pay once and then pay for expansion DLCs, since they're adding more work... (but free DLCs would be even better).
People who don't want to keep up with the story and new elements and shit can just play on what they already have.

I don't see why you must pay over and over to play the same content, since not everybody can/wants to play at the same rate, and it's annoying to be in a hurry to play in time...

I still think one of the best options is the buy to play variety, with a cash shop for some ease-of-life stuff, a la GW2. I'm definitely gonna try ESO, much like I tried FFXIV, but I'll have to see if I'll keep playing it while it has a subscription. I've tried a subscription in games, before, and I never felt like I was playing enough to make it worth the money I was spending monthly on them.

how real can this rumor become ?
Not real.

Final Fantasy XI, Final Fantasy XIV & WoW are pay2play too, and they go pretty well.
Don't expect it going f2p at least until 2017 (if ever)