The Black Eyed Peas singer branded the acts in 2016 as "nothing really memorable" as the show moves to ITV this year.
He claimed of last year's final series on the BBC: “It lost its excitement for a lot of reasons.
"The singers last year, there was nothing really memorable. How they picked the talent was like, blah.”
Will said things were very different on ITV.
“Being on ITV now, you feel their excitement and the new stage and the production. Now every singer is great. We haven’t seen a seven. Everyone is eights, nines and tens," he told the Daily Mirror newspaper.
Whether or not the singers really are better remains to be seen but there's no doubt that ITV are changing things up on the show.
Auditions have been switched up now so that if no coach turns for an act, the contestant leaves the stage immediately without talking to them.
Meanwhile, on the coaching line up, ITV have undone the BBC's controversial work to bring back Sir Tom Jones to the show alongside Will.i.am and two new names: American singer Jennifer Hudson and British rocker Gavin Rossdale, lead singer of Bush.
There's also a brand new look set and more live shows, with the knockout rounds to be aired live this year for the first time ever.
Another change is in the prize: The winner of The Voice UK 2017 will scoop a life changing record contract with music giants Polydor Records. The label is home to global music stars Take That and Ellie Goulding, as well as The 1975 and Years & Years.
But will any of the tweaks make for a better show?
The Voice UK 2017 starts this Saturday night, January 7 on ITV from 7PM.