Here’s an intriguing one for all you Sprint Hero owners. A picture of an internal Sprint document leaked today regarding a future fix for the phone’s Picture Mail woes may very well contain the date the device will make its jump from Android 1.6 to 2.1. While other handsets are going to have everything worked out behind the scenes, the Hero’s patch is said to be coming alongside a broader “maintenance release” on April 9th, a day that fits nicely within the timeframe the smartphone is expected to receive its 2.1 update. Obviously April 9th could come and go and absolutely nothing will come of it, but this feels pretty right. Just promise us you won’t set you won’t set your hopes impossibly high. We wouldn’t want you Hero users to be a bunch of sad little pandas like the DROID folk.