The Surface device is expected to arrive with different processor variants and a high end version with a Pentium 4415Y. The tablet showed up on a leaked OpenCL benchmark, possibly confirming some of the already rumored specs.
An official document leaked by a Reddit user indicates that the device might possibly be launched this week, along with a new Type Cover. It cites the date "7/13" for the unveiling of the upcoming products on the Store. This means that the Surface tablet will possibly be available for purchase by this Friday.
With reports of the tech giant working on a less powerful device, and an apparent delay in the launching of Microsoft's highly popular - albeit unconfirmed - Surface Andromeda device, it seems quite likely that the tablet is officially announced soon. The supposed date of release does coincide with previous reports that the relatively cheaper Surface device is targeting the student market; it makes sense to launch the tablet before the back-to-school season begins in September.