Right now, the Embedded team isn't share specific SKU details or any other information. (There are several Windows Embedded 8 SKUs available currently.) But Embedded is "aligning with the Windows release schedule," a spokesperson confirmed to me.
Microsoft's official pronouncement on Windows Blue is that it will be out by holiday 2013. My sources say Windows Blue is on track to RTM by August 2013 or so. So I'd say expect Windows Embedded Blue some time this fall.
Source: Link for ZDNet