Thanks for coming to the Community, and adding your vote to this idea!
We’re always working on improving the Spotify experience across platforms, but we’re afraid we don’t have any further information to share at the moment. We typically don't announce integrations with third parties in advance.
As a heads up, Algoriddim have an app called djay that allows you to mix tracks using Spotify. You can check out the details here.
If we do have any new info to share, rest assured we'll check back in here with a new status.