We tried to upgrade from 2015.1.408 to 2015.3.1002.
After the upgrade, we started experiencing errors with Kendo. After drilling in, we saw the following: when a multiselect is defined using a "div" element we receive an exception on line 9457 of kendo.web.js 'Uncaught TypeError: Cannot read property 'length' of undefined'. After changing the element to a "select" the exception is not thrown and the page appears to load normally.
We were unable to find any official release notes that suggested this was an intentional change.