You know how every couple of years, Apple changes their power chords to some other stupid fucking plug type that doesn't work with any of your older stuff? Yeah we hate that too.
A case like this however, will always be compatible. As long as Apple doesn't start making like 30-inch laptops, you are good.
From the manufacturer:
We pride ourselves in durability and a form - follows - function mentality. We create all of our products with a top tier level of performance capabilities. Because of the incredible materials and durable structure, the bag turns out to be not only solid, but extremely beautiful. As the leather ages it becomes softer to the touch, and as the waxed canvas ages it picks up beautiful hues of brown and nutmeg. Its a bag that ages with you.