I saw over at Planet CS that Judas has made a post about his map (cs_747) and it's upcoming update in beta 7, here..
Lastly, The plane is getting a new entrance in the back of the plane on the side of the cargo bay. The back door will be open with a small maitenance grating slid over the edge. This will provide 2 things
1) A small platform for sniping terrorists... they had a definite lack of sniping opportunity, and the CTs never used their's. I'm hoping this will provoke CTs to be more careful outside the plane and post snipers on the balcony to protect the assault team.
2) It will allow the CTs another entrance to the back cabin. You are able to carefully drop down onto this platform from the top of the plane. It will not be easy though... a missed jump hurts like a bitch if it doesn't kill you outright, and the platform has only enough room on it for 2 CTs at a time. There is only space for 1 CT at a time through the back door. If Ts are paying attention it will be much like dropping out of the control room vent in Assault.