Originally Posted by CallBell

A330-300s
JFK & ORD older style seats and non avod. Wont be re-fitted as they are pencilled to leave the fleet next yr or so.
ORD/EAV/DUZ all 3 have avod, new recaro seats and power points throughout the cabins.
EDY expected to arrive in June this yr with AVOD etc .

A330-200s
DUZ AVOD, recaro seats and power points throughout the cabins
DAA currently being refitted to DUZ standard expected return to service April 6th
EWR/LAX non Avod. older seats. LAX due to be refitted. EWR expected to leave fleet later this yr, though rumours persist that it will remain on a power by the hour basis

SFO is always a -200 due to its greater range.
IAD always a -200 as it operates on the days SFO doesnt. (though a -300 has popped in on occasion)
ORD mostly a -300 tho -200's make regular appearances and will do so over the summer
NYC 105 mostly a -300, 111 and 109 will swap and change regularly
BOS will swap and change regularly
MCO usually a -300

There is apparently a "master plan" for the schedule of the A330's, but for operational reasons, delays, tech problems etc, the aircraft on the day will sometimes be different to what was planned.

Hope this is of help and is somewhat clear!