Even more impressive than going back 5 years is going back all the way to the first version. While I'm a software engineer, I've worked in teams where we shipped hardware, and for a consumer product with lots of constraints including implicit expectations, going against the entire trend of the past 15 years and targeting a hard-to satisfy market segment, they far exceeded what I expected when they announced their first product.

At some point they will still likely have to force that cut-off, but yeah, it's great that they seem to be able to stretch it for longer than most people would have expected.