a 4.5L V8, why would Toyota waste their time making an engine 2 liters smaller then the 4.7 I-Force
I would say the next gen Tacoma would get the 4.7 but hard to say if it would be something like the 4Runner where they make it available from the start or maybe they would hold it off a year or 2 until the next version of the I-Force comes out that will be 5.X

cause then the 4.7 would be the smaller version so it could be used.
Nissan's Frontier is suppost to be the size of a Dakota with a V8 options so Toyota can't lack, nomore Tundra mistakes get it right the 1st time
The people at the dealerships only know what comes off the trucks and that they sell, the Nissan dealer I use to do business with did not know anything till it was in front of their faces