A little more info:
"Plans call for the E2s to eventually replace all the E1s, as many as 30 of which Neeleman said he planned to start sending to the U.S. to launch a new low-fare airline next year. The new carrier
would operate on a certificate separate from the AOC that Neeleman has secured for an Airbus A220 operation scheduled to launch in 2021 in the U.S., loosely known as Moxy."
https://www.ainonline.com/aviation-n...2-brazils-azul