Snort Package Upgrade Ques ??

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I'm new to Pfsense, i still learning how to use it but through tutorials and documentation i have been able to setup Pfsense with Snort and a few other packages and it has been running good so far.
I need some feedback as it relates to installing Snort Package Updates, i have been running Snort 2.9.0.5 on Pfsense 2 for quite a while now but i just notice there is a new version is available (Snort 2.9.1).
How do i go about moving to this new version and is it safe ?
If i move to this new version will i loose my Snort settings or break Pfsense?
Has anyone upgraded to this new version yet ?
How quick should a move to new versions of snort when they are available ?