Speaking to AFP by phone, senior coalition official Isatou Touray said her team in Banjul had still not been told where the inauguration would take place or at what time, but was adamant it would go ahead.
And she welcomed a declaration by army chief Ousman Badjie that his troops would not prevent Jammeh's removal by force.
"That's a very positive outlook from him, given that Jammeh's regime is done," Touray said.
"We don't have to risks the lives of innocent citizens." In remarks at a hotel restaurant late on Wednesday, Badjie said he loved his men and wouldn't risk their lives in a "stupid fight," eyewitnesses said.