I would say the revised number of 268 does include the 319s, although I personally think it makes sense to include the 319s which have been refurbished in that total (even though they're going off lease, they've still been refurbished).
As far as I know, the Turbostar equivalent units aren't included in the new total, as I think what's happened is the extra 323s and the 769s have been added to the original number of 243 units. I can appreciate it doesn't really make much sense, but it is what it is.
Hopefully this helps.