question re: "embedded" plug-ins

[Helln_HiHeels]

first off I would like to apologize for my very n00b question that I'm sure you've been asked 1000 times over.

I use oUF_Drk's layout last updated June/11 .. one of the embedded plugins (oUF_RaidDebuffs) was updated in Nov/11.

my question is there any need to use the updated version of the plug in ? and if so (or simply that it would benefit to have the updated version "embedded") how can I go about doing this ?