You're not going to find any sx2s any time soon. It going to be after the first of the year before they go back into production. Which means at the earliest, they won't go to distibutors until march/april, but i wouldn't expect them until june/july.....maybe.
The only tires that are being produced right now by interco are Boggers, Iroks, and one other i can't remember(I think trxus sts), and the sizes of those are limited availability.
sometime after the first of the year, interco is hoping to have 75% of the tire lineup back into production, so there is no real date on when some of the specialty tires will be produced again ieSX2, Bigger LTB, Stickys, etc.)