Now it might turn out that Motorola meant two cores humming at 1GHz each, and the words could have been taken out of context. Out of all dual-core mobile chipset, only the next generation Snapdragon, and NVIDIA's Tegra 2 have already shipped to manufacturers. The newest Snapdragon is probably going to HTC, so that leaves Tegra 2, if Motorola is to keep those 2GHz (rather 2x1GHz) promises.
Motorola is traditionally using TI's OMAP family of chipsets for the DROID family, and OMAP4 will be a dual-core Cortex-A9 endeavor, but it is still not ready for commercial shipments, from what we know. However, Moto has claimed that it will have NVIDIA graphics in its units, and that again leaves us with only one possible chipset choice for a dual-core flagship Motorola phone later this year.
That coincides with the rumors that NVIDIA and Motorola are buddy-buddies with Google on the next version of Android codenamed Gingerbread, which just accidentally might be tailored to tablets. So, for all we know, the dual-core Tegra 2 might appear first in the Motorola Stingray tablet, considering that we are already seeing NVIDIA-powered tablets multiplying like microwaveable popcorn.
Of course, that would mean that Gingerbread will be ready for the holidays, so we just hope this chain of thoughts doesn't turn out to be a train wreck.