That old adage still applies:
" if it ain't broken, don't fix it .. "
Unless there's something obviously wrong or it's a function you really desire, don't blindly upgrade or update.
That goes for amps, players or even TVs.
If you are really itching to do it, wait a few days, see if someone discovers a glitch or two, then plunge in. That is even more important when you can't easily restore the original firmware.