Yes, rumors about Pia Guanio getting replaced for 24 Oras' Chika Minute segment have now become official. But it's not because she's not anymore the best person for the job. She resigned because this season she wants to focus on being a mother. She values her family first more than anything.
Here's a statement from KapusoPRgirl:
Pia Guanio is etched in Philippines' Pop Culture
When people talk about showbiz stuff, they would usually say the phrase Chika Minute sounding like Guanio. That's an obvious sign that she has gotten part of the popular culture. Successful!
To Pia Guanio, you have served television well! We look forward to seeing you again. Perhaps in a talk show for moms?
As to who will replace her? Sources said that auditions have taken place and most Kapuso artists auditioned for that.