Some reviews have suggested that while this is indeed PSB back on form, musically Yes doesn't break new ground. I disagree. After 10 studio albums and much more besides, there is an awesome back catalogue of material with which to compare these 11 new tracks, and some here are truly unlike anything we've heard before - which could only be described as innovation.
The Xenomania influence in Love etc, More than a Dream and The Way it Used to Be has resulted in lush new soundscapes, song structures and sentiments that you would just not hear from a purely Tennant/Lowe written/produced track - indisputably new musical territory that's a joy to get your head around.
Xenomania songwriting influence aside, take the epic All Over the World - yes, while they've mined chord changes from the classics before (Red Letter Day, Delusions of Grandeur), and sampled them too (I'm not Scared) - this still sounds completely fresh. Or Legacy, which musically suggests a Battleship Potemkin influence - again, not something we've heard on a studio album until now.
And for the rest - they've taken the essence of previous albums and distilled them here in irresistible shiny pop perfection - King of Rome (the wistful elegance of Behaviour), Did you see me coming and Pandemonium (the upbeat love-fest of Very), Beautiful People (the guitar influence of Release), Building a Wall (Fundamental's political agenda) and Vulnerable (Nightlife's brooding reflection).
What you get from Yes is the best of the Pet Shop Boys - everything that's good about their last 25 years of music, and something subtly new that you probably wouldn't have expected 25 years on. It's classic, it's innovative, it's perfect.