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Microsoft quietly announced CollabDB, its latest list-sharing technology, back in 2015 and indicated it would be coming to Office 365.

What happened in the interim is something a few of us company watchers have been trying to piece together, amid Microsoft officials no comments.

Microsoft morphed CollabDB into “Project Osaka,” which — instead of being an Office list-sharing app — became something focused on “table sharing.” Osaka, which is currently in private preview, seems to have some roots in the Microsoft Access world.

Now, it appears Microsoft is deprecating the Project Osaka app before it ever actually launched. A message from earlier this week for those in the private Osaka preview says:

“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.”

Read more about this on ZDNet.