Playing from the back
Petr Cech was noted, in the Man City game, for nearly scoring an own-goal. This was in part due to playing from the back, and the implementation of this new style which he is finding difficult to master.
However, Cech made another error in the Cardiff game, and the defenders generally have also not fully adapted yet. The goal from Iwobi vs. Chelsea was from several passes, and all emanating from Cech, so it shows that the new style is paying some dividends. Nonetheless, it needs perfecting and this will take time to fully institute.
Pressing
The addition of Guendouzi has helped midfield pressing, and Xhaka and Ramsey have been very adept in this capacity. This was perhaps most evident vs. West Ham, and has progressed since then.
Alexandre Lacazette, who scored the winner at Cardiff City, stated lately that the team is eagerly adapting to Emery’s style.
Half-time changes
Wenger was often critiqued for not making half-time changes and only changing post-60 minutes in matches. This was not seen as opportune in changing games.
Emery has made changes at half-time and sought to alter formation and style, which is another thing that Wenger was called upon.
Constant touchline presence
This isn’t to knock Wenger at all. However, it was often said that he didn’t motivate players from the touchline as much as he could have. This is unfair in some cases, but it is not untrue. Emery, on the other hand, is the exact opposite. At all games thus far, he has been a near constant fixture at the technical area and giving instructions and guidance to the players.
This all adds to the meticulousness and attention to detail that Emery provides, or is noted for.
Off the pitch/training
The club has released several vids on Youtube, detailing Emery and the players in training. These may not reveal any key details of course. However, players such as Mkhitaryan and Ramsey have said that they are benefitting from the new regime.
It’s clear that things are developing, and there is an apparent alteration from Wenger’s methods. Mustafi also made a statement – possibly as a dig towards Wenger, who knows? – that he now knows what to do and is receiving proper instruction and guidance.
No fruit juice
This has been called out in some quarters. Nonetheless, it is just an evolution of what Wenger himself introduced, with radical dietary shifts when he was first introduced.
Fruit juice was permitted before, but due to the high sugar content, Emery has ruled it out, instead favouring water.
This certainly lends to being as lean as possible, and being physically primed to perform.