I saw E come up as an option for the first time yesterday when booking ATL-FLL in November... at least it's a discrete option when booking online, compared to AA where the default search result returned is O if it's available and you have to call in to get a higher coach fare class (important to me because I credit both DL and AA flights to AS... while E still earns on AS for now, I'm not willing to give up priority seating to save $39).