CRforVS_13_0_2 Backwards Compatible?

Hello.

I just noticed that the Crystal Reports Visual Studio support download has now change from CRforVS_13_0_1 to CRforVS_13_0_2

Questions:

1) Would there be any issues if some computer are running the older version and some the newer version?
2) What do I need to do if we want to upgrade to the newest version? Do we just install the newer version on top of the old version or do we need to do something special?

Thanks.