Microsoft has quietly killed off Project Osaka, an Office 365 collaboration tool that was still in private preview. As was first reported by ZDNet, Microsoft has sent a message to those in the Osaka preview, noting that it will be retiring the service on March 31.

Project Osaka Retiring

From Microsoft:

Beginning today, we're winding down Project Osaka and it will be fully retired on March 31st, 2017. We understand that this transition won't be an easy one and we're working hard to make this process as easy as possible. Please see the instructions for migrating your data. We've enjoyed working with each of you and we have deep admiration for the things you've built. Thank you for using Project Osaka.

For those unfamiliar, Project Osaka morphed from a previous project called CollabDB. The service was meant to allow users to collaborate on and share tables in real time, but not much more was known about the service. It's unclear if we may see pieces of Osaka make their way into other productivity tools from Microsoft, and it's not likely we'll hear anything official since the tool never left private beta.