CRJ900 Enhanced

http://www.bombardier.com/en/media-centre/newsList/details.bombardier-aerospace20140605bombardierdeliversfirstenhancedcrj90.bombardiercom.html

Bombardier Delivers First Enhanced CRJ900 NextGen Regional Jet to American Airlines

American Airlines is the first customer to take delivery of the enhanced CRJ900 NextGen regional jet, which provides up to 5.5 per cent fuel burn reduction over earlier-generation CRJ900 aircraft.

Will this Jet be included in AS, and if so, when can we expect it?

I already have it in my queue for data research - together with the CRJ-700 Enhanced which has been delivered to AA some days/weeks before.

What does the price of the Enhanced do compared with a normal CRJ 700 or 900?

More legroom? Isn't this a matter of the airline?