We try to update CS following its development - and its development is somehow connected with what happens in PS.
At the moment what you have available is a specific date of the SDK, but if you build the client yourself you will see that a more recent date is usually used.
To use some new feature of CS in PS is a bit more complicated. Design and implementation can take some time. Despite that, there is an attempt in using some of the features that are appealing for PS context.