New
rumor - 30 days. It makes sense. Verizon's Droid Pro has had Gingerbread for a while so the holdup is at Sprint not Motorola.
The 4G u-turn has left Sprint with a couple of hardware problems. They had to scrap their hardware roadmap because most of the phones on the drawing board/in development were Wi-Max. They had to start from scratch for LTE so there haven't been any new 4G phones lately. Most of their inventory is older phones. This hurts in two ways - customers, especially NEW customers, want the newest shiniest bling and the old phones aren't equipped with features that allow Sprint new revenue streams (SprintID, NFC).
In 2-5 months when the new phones roll out it's going to get a lot harder to sell these old phones. Who's going to want a year-old Photon when they can get the Nvidia Tegra 3 version? Sprint is doing everything they can to blow out their Wi-Max and 3G inventory before the bell tolls. They started with December's unadvertised upgrade early promotion and have had at least 3 promotions since then. Look for them to get more aggressive as the LTE rollout nears pulling out discounts, rebates, and android upgrades.