X3D on Seat plan?

Just went into my booking for LHr-MCO 28 Nov and return 13th December,
The seats booked gad moved and the seat plan,whilst still A330 seat plan, the graphic had changed.

Also, instead of the aircraft type at the top of the plan it says X3D on both.

Anyone know what tgat means?

Many thanks

[mitchja]

Those are just the internal codes VS use for the different A/C types they operate.

My bookings show the same as well.

B789 = X9E
A351 = X5H

Ah thanks
Still not sure if we will be flying yet

I had this a week or so ago, lost all of my seats on the 351 to JFK

Luckily it seems only one other passengers in the cabin with my and my 7 travel mates so we were able to swap back without an issue

I've just had aircraft configuration for January Caribbean flights change from L3D to X3D - not really sure what that's about. Was and still is an A333. Assume it will actually be a 789 flying come the day.