2015 Sync, what or how to update?

[Warhead]

I never think about Sync much, but I just logged into syncmyride.com and found I am on version Sync2 V3.7 and am up to date since April 21, 2015.

Is there a reason to update, and a path to newer Sync software?

Sorry if this was posted elsewhere but I didn't see it.

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[HizliBullet]

there was a version v3.8 released then taken down, the update was siri eyes function, iphone improvements.