I'm certain I have the last version & can confirm that all marks of 1-11 have wings modelled in the VC.
In VC mode if you put your head out the side window & look behind, you can see the wings. The wing view toggle is nothing clever & just makes these 'interior view' wings vanish/appear.
There never were any bitmap wing views available from my website, but there may be some on AVSIM etc.
There used to be bitmap interior cockpit views, but these were phased out when the model went VC, because FS automatically shows you the VC interior when you look around in 2D mode.
The later versions all have a VC. Any no-VC model or panel will be an old version.
'Hold down 5 then press either 1,3,7,or 9 for wing views' is indeed correct, but is only what comes built into FS for all models & not any idea of mine. :doho:
Cheers
David