I'd hope they would do that at some point. And the release of 2.0 is as good a point as any. But don't expect much lasting impact on population numbers. FF games generally have a niche following.
Even if a large number of people bought it, they'd have to stick around for the long run. In the short run the population may boom, but unless the game changes enough to grab the casual gamer, those players won't stick around terribly long.
WoW -- Zaia -- Dragonmaw -- Mage 80 BABY! Alchemy 450
Also... Hunter 62, Rogue 52, Warrior 66, Warlock 43, Death Knight 70, Shaman Who Cares? ;)
FFXI -- Caia -- Retired/Deleted -- Blm 75, Alchemy 97
Pandimonium server - Rank 10 - Bastok
Zaela Rdm -- 35, Alchemy 45 -- Forced into retirement because I didn't have the right kind of credit card. Hope it was worth 18 bucks a month, SE.