They probably won't release anymore info until the next live letter. March 23rd or 24 irrc (can't look it up at work).
Ket brought up a good point, when the last big patch went into effect they announced all the details on that live letter, then released the patch a few days later. So chances are we will have 2.2 in exactly 2 weeks.
Confirmed 2.2 info from reddit thread:
Quote:
•New Coil turns which drops new Allagan gear (higher ilvl)
•Leviathan (hard mode and extreme)
•1 new dungeon (ruins of amdapor)
•2 new hard mode dungeons: Brayflox + Halatali
•New Hildebrand story
•New story missions, probably leading up to Leviathan.
•Extreme mode King Moogle
•Kobold and Sahagin dailie
•New currency like Philo and Myth
•New artifact armor (source needed)
•Vanity system (Mirage Prism)
•Expansion of the dye system (source needed)
•Crafters will be able to alter gear designs using a “template” system (official name TBD)
•Wait command in macros will be allowed in-line. [now in patch 2.16]
•Free Company alliances
•New hair styles (Yoshi-P has said each major patch will have a main focus on a single race) (source needed)
•Ability to indicate number of items to store in a retainer
•A retainer can be hired for a Free Company's estate "From patch 2.2 onward"
•Ability to hide (again) quests from the HUD duty list
•Change luminary Workbench and table visuals
http://www.reddit.com/r/ffxiv/wiki/patch_22