1:1 conversations continue to be e2e and will forever be (allegedly).

Communicating with a business will not be e2e, per their new TOS.

Simple “Privacy nutrition labels”, like apple recently introduced in the App Store are a neat idea, but because they are self reported and not standardized they can do more harm than good. Eg it’s not clear from the labels that WhatsApp is e2e for personal comms while telegram isn’t by default and never for groups.

WhatsApp confirms they keep some of your personal data including phone numbers from your address book but doesn’t currently share that with Facebook.