Russell Brandom, for The Verge:
The version of Allo rolling out today will store all non-incognito messages by default — a clear change from Google’s earlier statements that the app would only store messages transiently and in non-identifiable form. The records will now persist until the user actively deletes them, giving Google default access to a full history of conversations in the app. Users can also avoid the logging by using Allo’s Incognito Mode, which is still fully end-to-end encrypted and unchanged from the initial announcement.
Of course. What does Google have to gain by going out of its way to protect its users' privacy, thereby acting against its own business model?