So we have another reengining programme! American Airlines just announced to purchase up to 300 B737 aircraft (as well as up to 625(!) A320neo). The more inportant detail of this message is that 100 (+60 options) of the B737NG's will be powered by the LEAP-X, unofficially launching the reengining program of the B737NG, as this needs confirmation by the Boeing board.
What does that tell us?