The SPA set of features was released as a part of Kendo UI Q1 2013 release and is still in a beta phase. So far, we are not planning on introducing any breaking changes in the current architecture and if we don't discover any major design flaws, we are going to remove the 'beta' mark in the next release.
The SPA feature set is in fact two standalone components - a router and views/layouts. Each can be used without the other, which means that you can swap the view layer for something that supports knockout.js better, while still relying on the router for navigation.
The views/layouts components are actually very thin wrappers around the Kendo UI MVVM component. This brings an out of the box support for declarative Kendo UI widgets initialisation in the view markup.
You may also find the Backbone integration blog posts on our website by Derick Bailey interesting.
the Telerik team
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