Sprint's Motorola Photon 4G, one of our favorite devices on this network, is receiving a small over-the-air update that will bring it up to version 4.5.1A-1_SUN-154_6/45.2.7.MB855.Sprint.en.US. The only publicized fixes are related to Wi-Fi, with users over at Android Forums reporting improved performance.
As always, wait for the update to pop up or force the check by going to Settings > About phone > System updates.