Cecilia Vega will work on Saturday and Tom Llamas will take Sundays . Both have been filling in since previous weekend anchor David Muir took over weekday shows from Diane Sawyer last September . The move comes after the network announced that it was cutting back its prime-time schedule by a third to 10 hours per week starting with this fall, which is expected to be followed by another cut of
Cecilia Vega will work on Saturday and Tom Llamas will take Sundays . Both have been filling in since previous weekend anchor David Muir took over weekday shows from Diane Sawyer last September . Vega joined ABC in 2011 , Llamas has been with network for five months .