Can my tmobile iphone 4s upgrade to ios7?

My iphone is from sprint and i got it unlocked with a gpp sim, and i was wondering if i can update my iphone tomorrw when ios 7 comes out because i don't want my phone to not work after i update. Does anyone know?

Yes you can upgrade to ios 7

Yes. It can.

All iphones can upgrade regardless what carrier you're with.

Yes iOS7 upgrade will be there for iphone 4s