It's more than a hint. The service was active on Google for some time a few hour...

Achshar on March 18, 2013 | parent | context | favorite | on: Google Keep, a New Service for Taking Notes

It's more than a hint. The service was active on Google for some time a few hours ago and then was pulled down again. It definitely exists, not a matter of 'if' but a matter of 'when'.