Now redeeming them will mean 100 points for every $1.00. Do the math and you will see that means 40,000 points will be needed for $400 flight. Before domestic flights up to $400 in value only cost you only 20,000 points.
If you were planning on using your Citi rewards to book a summer flight, book it now before the rewards system gets changed upside down.
On an unrelated note, days ago Citi still announced it is continuing with its $400 million sponsorship for the NY Mets. They can afford to give $400 million to a baseball team but not $400 plane tickets for the previous price cardmembers paid!