QNX 6.2.1 patch B - small clarification required

Currently I am working on QNX PE 6.2.1 and according to my work specification I am supposed to work on 6.2.1B. From QNX website link qnx.com/developers/articles/inst_381_1.html
I came to know that this patch is useful for Motorola Lite5200 family and I am working on SH4 family.

I would like to know is it really needed to add this patch to my current version? If I add this patch, am I going to get any added features?

Thanks in advance,