As a reminder...
Delta 747, 757ER, 763ER, 764ER, 772, A332, A333 total - 177
Delta 737, 752, 753, 763, A319, A320, DC9, M88, M90 total - 550
Total Delta Fleet- 727
Delta Connection
CRJ100/200 - 347
CRJ-700 - 78
CRJ-900 - 101
E170 - 9
E175 - 52
ERJ145 - 24
Saab 340 - 16
Total Delta Connection - 627
Now any reductions in the fleet seem to becoming on the CRJ100/200 level, because of age and cost. But they're not being scoped out.
I have not heard anything about trying to bring over or eliminate the CRJ700, CRJ900 and E-Jets to mainline.