The source then goes on to speculate that the Blaze is going to feature a 4.3" Sharp screen with qHD resolution (960x540). It's going to be running on a 1GHz dual core CPU. The OS isn't mentioned, but I think there's a better than even chance it could be running Windows Phone, and if that doesn't work out then it might run iOS.
There's no manufacturer mentioned other than vague hints that a Shenzhen OEM is involved, but Ericsson is being tossed around as the development partner. That is certainly not impossible, and it is no less implausible than any other part of this rumor.
P.S. The Blaze is the name of a fictional Amazon phone that Android Police invented last year. I find it doubly amusing that life imitates art.