Via Randy Petersen, United is offering (1) Mileage Plus elites who (2) have a United Visa a 20% rebate on roundtrip saver awards booking on United and United Express.
One-way awards, open jaws, and stopover awards are excluded from the rebate offer, and partner flights are excluded as well.
As with most United offers, I imagine that anyone will be able to register for the offer (and registration is required), but only those eligible (elites with a Mileage Plus Visa) will actually receive the benefit. This is one of my pet peeves about United promotions — if they aren’t going to allow a member to take advantage of an offer, don’t confirm that the member has registered successfully! But then United’s IT has never been close to the best…
The offer requires booking by December 15, and since I haven’t seen the email from United yet (guess I should check my spam server?) I don’t know what the travel period for the offer is.