[eightysix_four]

Possibly - the two sites I've seen with "hands-ons" do not mention this anywhere.

[ikeboy]

http://www.wsj.com/articles/google-takes-on-apple-facebook-w... (https://archive.is/ELitC for paywall)

>All chats will be encrypted, but a special incognito mode will have an end-to-end encryption, and expiring chats that are permanently deleted once you leave them.