The trademark was discovered by a user on the GR86.org forum. Toyota has yet to announce any details about the Grand Highlander, but it’s likely a larger Highlander with more 3rd row passenger room and cargo space than the standard Highlander.
The larger Grand Highlander would be a good thing, since the standard Highlander definitely needs more space in the third row. It only has 27.7-inches of legroom in third row, while one of its main rivals, the Honda Pilot has 31.9-inches. The Highlander also only has 16.0 cubic feet of cargo space with the third row up, compared to 18.5 cubic feet in the Pilot.
For now we’ll just have to wait and see. Stay tuned.