It will keep up. There are 74 A320 slots to be filled by September, vs 22 on the E190. Of course, a new system bid will close in 6 weeks, so that will reshuffle things a bit.

Since deliveries are only on the Airbus side, expect hiring to continue to be mostly Airbus for the foreseeable future, with occasional medium sized E190 classes to cover people bidding out.