We usually don't document the differences between RCs and the final release as it's only bug fixes. But you can check all differences on GitHub:
https://github.com/splitbrain/dokuwiki/compare/release_candidate_2013-11-18...release_stable_2013-12-08
AFAIK, there are no security issues with Binky RC2, so you'll only end up with a few more bugs.
Other than the documentation issue, any issues with third party templates cannot be fixed in the core, so should be reported in their respective issue tracker and not here.