UPDATE: United has extended the devaluation until February 3. 2014 so you have this weekend to book award trips! Straight from a Unites representative “Booking an award where the mileage amount should have been reduced on February 1? If you book one of these awards on February 1 or 2, we will honor the reduced mileage amount. Although initial ticketing will be at the current, higher level, we will retroactively re-price your award to the lower mileage amount within 10 business days.”
If you are up to date in the travel, points, and miles world than you are already well aware that starting tomorrow, February 1, 2014 it will cost a significant more to redeem your United miles for international flights. For those that only redeem United miles for domestic flights, you are not affected, do not worry (keep in mind though, Hawaii is impacted)! But those that typically save up their miles for international flights, especially partner airlines, I suggest booking your flights today!