Upgraded Butternut Squash?

I recently purchased a butternut squash that looked mutated:

This was one of many similarly weird choices. This was long (that's my hand and an 8" chef's knife for scale). And bent. Most butternut squashes I'm familiar with are generally around this big:

It's almost like they bred a new squash to grow all stretched out. In fact, when I cut it open, I saw that there was way more edible flesh per gourd than the "regular" ones, with way fewer seeds:

So, my theory is that this is a new, upgraded version of butternut squash.