Apple TV 3 stay on 5.0 or update?

Hello,

I bought an used ATV3, which is still on firmware 5.0. Now I´m thinking about if I should update to the newest one (regarding the new design and some added features, but also harder to connect Plex) or if I should stay on 5.0, because of any possible future jailbreak, which might only be available for later firmwares, although this is pretty uncommon when you take a look over to the iOS (iPhone/iPad) Jailbreaks… they are always for the newest one and lower.

Thanks for your help and kind regards!