Yes, 4.1.x does not support SQL Server 2014 (specifically, today's current version, 184.108.40.206.78, doesn't support it with the latest JTDS drivers)
No, downgrading the database to an earlier version is not an option.
No, I can't find anything official on what version will support it or even when the 4.2 release is planned for.
Is there an official Oracle statement about:
* What version will support 2014?
* When that version is scheduled to be released?
and if so what search term will pull it up/what url should I keep an eye on for announcements?
I'm usually fairly good at navigating the support site / OTN but I keep coming up dry on this one.
It's not been announced. Are you looking to do a migration from SS2014? As those become more and more common, it will drive us to add official migration support for that platform.