Pioneer DJM900 nxs2, & DDJ SP1 compatibility

I already own a DJM900 NXS2 mixer.

Now with the new firmware updates of the DJM900 nxs2, and the addition of 3rd party software such as Sererto. Is the DDJ SP1 now fully compatible? 

I am thinking about buying one to go with my set up, or should I keep my money in my pocket?

Thank you in advance.