It’s called Maker’s 46, which is unfortunately a reference to the stuff’s in-house profile number during the testing process, not four-plus decades of aging. According to the AP story detailing the drink:
“Whiskey barrels storing Maker’s are emptied so workers can insert oak planks inside each. The barrels are refilled and aged two to three months longer than traditional Maker’s, which ages six to seven years. As Maker’s 46 mingles with the wood, it takes on stronger hints of caramel, spice and vanilla, [master distiller Kevin] Smith said.”
Maker’s 46 will run somewhere between 30 and 40 bucks for a 750ml bottle, be distributed in much smaller quantities than your typical Maker’s, and probably only arguably be better than a $25 bottle of Bulleit. Then again, Bulleit is delicious.