I have been slightly frustrated by the lack of roadmap information for this provider, so I created a feature request in the hope that it might stir some information out of Oracle:
Please upvote it if you want it to get some attention.
There is already a EF 6 feature request you can vote for here:
It's best to search for an existing feature request and vote for that one, rather than creating a new one. Multiple entries merely split the vote up and make the feature less prominent when Oracle Development prioritizes its future projects.