Is this "Our awesome T-shirt" from Acme brand and is it pre-shrunk, so it won't shrink after washing?

Yes, this "Our awesome T-shirt" is made by Acme. According to the product details, it is also pre-shrunk, so it should maintain its size even after washing. This helps to ensure a consistent fit, wash after wash.

What's the deal with the 'Lithograph' option for the Example T-Shirt?

The 'Lithograph' option for the Example T-Shirt refers to the printed design's size - its height is 9 inches and its width is 12 inches. It's a great way to showcase the awesome design on your new shirt, created by Acme!