Celdran will be stepping down from her anchor posts to take a break and spend more time with her family.
The channel will be available exclusively on Cignal TV.
Sources tell us that the seasoned journalist has been in talks with the local CNN station to become its newest on-air talent.
In his new role, the veteran broadcaster will oversee the sports division's online news coverage on all things sports.
Mercado will take over the highly acclaimed 9 o'clock edition of 'Newsroom,' currently anchored by Mitzi Borromeo.