The latest version of indesign is Indesign CC 14. It's a very recent update.
We tested it by exporting to idml and activating the option for the unsupported file versions and, so far, it seems to work without issues.
We didn't perform a deep test of all the features (like footnotes, linked references and such) but seems the new Indesign features focus on the layout management and metadata information of objects (images and text boxes) rather than on implementation of new features strictly connected to text management (like it did last year).
You can find the process unsupported versions options in the filetype settings of your project settings (or template, or trados itself..)
I hope this helps a bit.