St Maarten by FlyTampa! is already released, see http://www.flytampa.org/forum/viewtopic.php?t=2977
Up and coming are:
KaiTak by FlyTampa!, see http://www.flytampa.org/forum/viewtopic.php?t=3063, its nice to see Martin at work, the scenery around the airport is just plain amazing.
JFK by FSDreamTeam, see http://www.fsdreamteam.com/forum/index.php?topic=715.0 for some great screenies and http://www.fsdreamteam.com/forum/index.php?topic=684.15 for some technical details.
Heathrow by UK2000, see http://www.uk2000scenery.org/forum/index.php?topic=839.105, which shows Gary's usual great work.
There really are a great range of scenery, aircraft, and airport add-ons for FSX lining up. The next 2 years will just get better and better for FSX with the new hw and new add-ons coming on.