Sprint is bringing new improvements to the Galaxy S7 with a minor update that is rolling out to the device. The update comes with firmware version G930PVPU2APD3 and is a 141.93 MB download; included in the changelog are battery life improvements, better performance in calls made over Wi-Fi, and the security patches for the month of March (the April security patches will hopefully arrive sooner).
As always, the update will be rolling out in stages and might not be available for your Galaxy S7 right away. If you can't wait, you can hit the Download updates manually button in the Settings » About device » Software update menu and hope for the best. The Galaxy S7 edge should be getting the same update in the near future, and we will be sure to let you know once that happens.