Animations have been a big focus on Android P, so it was a bit surprising when the new Recent menu landed without one to invoke it. In previous versions of Android P simply collapsed without any fanfare. But now in DP3 / Beta 2, Google has introduced a new rubber bounce, as well as a new semi-transparent rounded background for the application tray. The slight translucency in the complete list of applications also seems to have gone (fortunately).
Recent and applications list on Android P DP2 / Beta 1 (left) and Android P DP3 / Beta 2 (right)
All changes are summarized succinctly through previous animations, but if you prefer a description of text: The shortcuts of the application in the Recent menu accelerate just above where they did it before, with an important bounce to its original position. A new white rounded semi-transparent background for the application tray and an elongated search field accompanies this change.
In a small personal victory, the application drawer is no longer a bit translucent. The previous design seemed pretty dirty with that little transparency. The new look is much cleaner.