Hmm.. my guess for 2.3 would be:

- 2 more Hard Mode Dungeons. ( I would not mind CC and AV )
- 1 new Dungeon. ( Invisible City could be interesting, with invisible Walls and some nifty gimmicks )
- Ramuh ( Hard ) and ( Extreme )
- new Beastman Strongholds: Gigas and Mamool Ja ( Both are in the Game without a Stronghold and for further Primals they need Strongholds ) so also:
- at least 1 new Area
- new CT Turn. ( with the actual CT, since we basically fought all FFIII Maze bosses )
- Hildibrand Quest with more hints towards the OOOOOOOOO Encouter
- Mainstory Progression
- Sidequests

This what i would expect... what i also hope for somewhere the next couple Updates, so either 2.3 or 2.4

- Personal Housing
- PvP Frontline
- Chocobo Breeding
- Golden Saucer ( i would guess this to come around Expansion tho )
- Ultima ( Extreme )
- Shiva ( Hard ) and ( Extreme )
- Levelcap Raise
- New Largscale Raid ( something like Dynamis )
- New Housing Areas ( Coerthas and MD )
- New Areas ( Al Mhigo and what not.. there are several Areas labeled on the World Map not available yet, some will be due Expansion probably )
- New Jobs!!!!

And many many more..