Apple released iOS 11 beta 3 a few hours back as predicted some things we have discovered so far:

Disabling apps in the draw in messages seems to now work in beta 3

No longer have to swipe up for earlier notifications

Can now turn off Auto Play Videos in the App Store. Settings > iTunes & App Stores > Auto Play Videos

Blue echo speech bubbles are back

Apple has added a broadcasting option in the screen recording section however it doesn’t do anything at this point. 

Let us know in the comments below if you find anymore changes