New pass-rushing moves, an "intuitive" tackling system, and upgraded coverage logic are probably the changes which promise to provide players an enhanced likelihood at turning off the opposing offense. There's also a different "crowd-sourced recommendation engine" for Madden 19 Coins suggesting plays to select according to games played online, which sound questionable the theory is that to me in the bad play-calling I've seen online around my time. (Fourth down typically means you punt!)
Madden 19 will be on August 26 in North America and August 29 in Europe on Madden NFL 19 Coins Xbox One, PlayStation 4, Xbox 360, and PlayStation 3. Expect to hear much more about the action next week during E3.