What is the latest patch available for ALM 15.01 version..? Eloborate features aswell from the 15.01 P1.! 🙂

We are currently using ALM 15.01 P1 and client launcher 2.1 version. Is there any compatibility issue happen while update any patches.? 

For synchronizer part we are using 15.00 version if we are patch our application server means shall we need to do the same on synchronizer server.?