Joleon Lescott was interviewed on Radio 5's Sportsweek by David Davies (possibly a few days old and aired today).
He was asked about Mancini, the changes under Pellegrini, whether he was a squad or regular player etc, but the one thing I found intriguing was that like Kompany he said that the training is of a higher intensity than under Mancini, and that the players were consequently fitter. This ties in with suggestions from pre-season that City are going to try and press the ball to a much greater extent than before.
Will we notice a difference - maybe not because it's all relative. Our opponents will also be fitter. We had the ball for the most part in Premiership games so fitness wasn't so important, but in Europe, particularly against Dortmund and to an extent Real Madrid we were overwhelmed at times.