In a Thailand product catalogue, a mock-up has been done up of a possible August release 2-pack, for about US$210.

NOTE - mock-ups are only a guide of what to expect as a CONCEPT, it is NOT an indication of what the actual product will be inside, or how it will be packaged.
My thinking is that it will be part of the Hasbro Asia "Movie Trilogy" series, intentionally using the 2007 movie versions as part of the "Trilogy" concept (toys from all three movies, not just the latest one).

Being packaged in robot mode, this will be a big box, like the Optimus/Jetfire 2-packs released for TF2 & TF3.