I will probably wait for the "Macho Nacho" variety grown by Bonnie Plants and sold every spring at Walmart and Home Depot. Jmoore mentioned growing them this year and reported they grew very large peppers. I suspect the Bonnie plants are grown from Burpee "Gigante" seed. I don't think Bonnie is known to produce seed, they seem to only grow and furnish plants to retail outlets. That means they have to buy their seed in bulk from someone else.
All of my seed germinating space will be taken up next year by heirloom tomato seedlings. I had really poor results growing peppers from seed this past spring and I don't want to waste another spring trying to germinate them and then need to buy them retail. I'll germinate more tomato varieties and let someone else germinate my peppers.
I've noticed in the last couple of weeks that most grocery stores in my area are now carrying the extremely large jalapenos. A couple of the stores have identified the peppers as "grown in Mexico". To me, that means they either are not hybrid and are widely grown as an OP variety or some seed producer (possibly Burpee) is producing a lot of hybrid seed and is distributing it widely. It then seems to be resold as seed or seedlings or harvested fruit under many names.
It's a little hard for me to believe that numerous seed producers suddenly developed a new "Giant" jalapeno hybrid within a couple of years of each other.
By purchasing large seedlings of the macho nacho, it also allows me to get a larger plant into the ground earlier. That results in harvestable fruit earlier than normal. I may let some fruit mature to the red color, harvest some seed, germinate that seed; and see if it grows true. I think I can accomplish it in one summer.