4567
Why so suprised to see another 767 coming? IMHO they need a total of 5 763ER's & 2 B752's as well as standising on the B737-700/738's & staying away from the B739.
After speaking to mates of mine that flew the B739 at XL before their demise the B739 struggled to make LGW & MAN from Egypt. If they can't make Southern or Central UK airports, then they won't make Scottish ones. No B737 of any series can do the job of a B752 or offer its level of flexibility.
4th 767 is due in 03-05/09 apparently.