It's supposedly running gingerbread
Checkout droid life or android police
It will but right now they have it as 2.3.4
I have a TBolt, so already (battery life aside) I have a great phone. I really wouldn't consider it "holding out" for this phone, but I have a feeling it will be in my hands when it hits...
I honestly wouldnt mind the Vigor without lte because the battery life and I only live in a lte extended coverage area.