Having spent the entirety of its life in a preview, Project Osaka is now being discontinued come March 31. Initially introduced as CollabDB as a list-sharing app for Office 365, it morphed into 'Project Osaka' sometime in 2016 as we recently found out.
As noted by WalkingCat, the project turned into a table-sharing tool but stayed as a public preview with little information divulged by Microsoft. The shift may have had something to do with the company's acquisition of Wunderlist. Now it seems that the app is being shut down.
Users in the preview are being met with this message:
"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."
The corporation has been dabbling with collaborative tools for a while now, introducing Slack-competitor Teams as part of its O365 suite back in November 2016 and releasing Staffhub for subscribers of the service a few weeks ago, but it has remained tight-lipped about the project throughout and is unlikely to change that stance. You can learn more about Project Osaka here.