You may have seen articles in the media about the just released proposed WMATA budget. If not, here are a couple of links to bring you up-to-date.
Unfortunately, the proposed budget, if passed, means very long gaps between trains at White Flint. During peak hours, trains will come every 8 minutes. (Currently, the goal is a train at White Flint every 6 minutes during rush hour.) During non-peak hours, trains would come every 15 minutes. (Currently, the non-peak goal is a train every 6 to 18 minutes depending on the time of day.)
Stay tuned for more information on this issue as well as ways you can provide your opinion to WMATA on these service cuts.