The Nationals and shortstop Ian Desmond haven't made progress on a long-term deal, but Desmond says he's focused on 2015.
The event will return to the Walter E. Washington Convention Center.
Bryce Harper feels great, but he's not making a priority out of being ready for the start of spring training.
Eighteen players, including Bryce Harper and Stephen Strasburg among others, and Matt Williams will be at the annual winter event.
Tickets for the annual event go on sale on Thursday morning.
The Nationals announced the list of players scheduled to appear at the event on Jan. 26, including Bryce Harper, Ian Desmond, Jayson Werth and several others.
After a two-year hiatus, the Nationals will host NatsFest on Jan. 26 at the Washington Convention Center.