In the June 2016 quarterly update blog post Microsoft did not mention any available updates for Exchange 2010, which might seem odd considering the March 2016 quarterly updates included Exchange 2010 SP3 UR13. Normally a clearer announcement is made on the Exchange team blog, but not this time for some reason.
Well as it turns out, Update Rollup 14 has been released about 1 week prior as part of the MS16-079 security update, and contains security fixes for Oracle libraries that are rated as Important.
Update Rollup 14 for Exchange 2010 SP3 can be downloaded here.
MS16-079 is also how Exchange 2007 SP3 UR20 was released.