I'm gonna start off by saying I didn't read through this topic. That said...
Kingdom Hearts is pretty up in the air. I could see it going to either the Wii or PS3. By the time they actually need to start developing it, it should become clearer.
Dragon Quest X I would bet will hit the DS or the Wii. They're putting IX on the DS (first time a main-line SE has been released on handheld instead of console), so it's pretty safe to say they're all-in with Nintendo for a while.
Final Fantasy XIV will rely heavily on Final Fantasy XIII. There is a significant chance it won't even come out this generation. If FFXIII does poorly, the entire Fabula Nova Crystallis is in danger, and if THAT sells poorly, I can't see SE risking their series on the PS3. It is too early to tell.
EDIT:
Final Fantasy titles, 6th Generation, remakes excluded:
PS2:
Final Fantasy X
Final Fantasy X-2
Final Fantasy XI
Final Fantasy XII
Dirge of Cerberus: Final Fantasy VII
GCN:
Final Fantasy Crystal Chronicles
GBA:
Final Fantasy Tactics Advance
Mobile Phone:
Before Crisis: Final Fantasy VII
Total: 8 (5 PS2, 1 GCN, 1 GBA, 1 MP)
Final Fantasy titles, 7th Generation, remakes excluded:
PS3:
Final Fantasy XIII
Final Fantasy Versus XIII
Final Fantasy Agito XIII
PSP:
Crisis Core: Final Fantasy VII
Final Fantasy Tactics: The War of the Lions
Dissidia: Final Fantasy
DS:
Final Fantasy XII: Revenant Wings
Final Fantasy Tactics A2: Fuuketsu no Grimoire
Final Fantasy Crystal Chronicles: Ring of Fates
Wii:
Final Fantasy Crystal Chronicles: The Crystal Bearers
Total: 10 (3 PS3, 3 PSP, 3 DS, 1 Wii)
They're actually producing MORE FF titles this generation. FFXIV will not see a release this generation.
PS3: 5.51m/51w, avg 108,039/w (up 239)
360: 12.93m/102w, avg 126,764/w (up 625), leads PS3 by 7.42m (up 70k), avg lead 18,725/w (up 386)
Wii: 13.52m/51w, avg 265,098/w (dn 1,102), leads PS3 by 8.01m (up 90k), avg lead 157,059/w (dn 1,341)
If 360 sales stabilize, PS3 sales increases needed to pass 360 by...
01/08: (008w) +875.8%, 04/08: (021w) +344.4%, 07/08: (034w) +219.3%, 10/08: (047w) +163.5%
01/09: (060w) +131.8%, 04/09: (073w) +111.4%, 07/09: (085w) +098.1%, 10/09: (099w) +086.7%
If Wii sales stabilize, PS3 sales increases needed to pass Wii by...
01/08: (008w) +1072.%, 04/08: (021w) +498.4%, 07/08: (034w) +363.4%, 10/08: (047w) +303.1%
01/09: (060w) +269.0%, 04/09: (073w) +246.9%, 07/09: (085w) +232.6%, 10/09: (099w) +220.3%
If PS2 sales freeze, Wii sales increases needed to pass PS2 (as of Mar07, 108.4m) by...
2008: (008w) +4373.8%, 2009: (060w) +0496.5%, 2010: (112w) +0219.6%, 2011: (165w) +0116.9%
2012: (217w) +0064.9%, 2013: (269w) +0033.1%, 2014: (321w) +0011.5%, 2015: (376w) -0004.8%
At +0% it will pass it in 358w, the week ending September 19th, 2014, at an age of 409w (7y44w).
Current age of PS2: 7y37w.
Last update: Week ending November 3, 2007