The Nexus 7 was announced at Google IO 2012 which was held at the end of June. The Nexus 7 isn't quite 11 months old yet. In reality we have no idea when a company will ship something, but judging by Google's past revelations at their developer conference, I'm sure there will be something new next week.
This technology is actually pretty advanced. What they have done is removed the need to go the bus when CPU shares data with the GPU. They put it in main memory, mark it, and then the GPU is allowed to use it. Currently, the CPU can only send data over the bus. I saw some demos of this and it is quite impressive they have been able to come up with this solution.