The Motorola Droid Pro update we first learned of last week has begun making its way to handsets. The new software brings the Pro’s build number to 4.7.3 and provides enhanced keyboard backlighting along with other small improvements and fixes. Pre-installed Verizon apps also see an update. And if it wasn’t already obvious, this is not Ice Cream Sandwich. You can get the rundown on the update at Verizon’s support site.