Well, we certainly won't have to worry about it for now. But that doesn't mean we shouldn't worry about it, of course.
It's a ways off in terms of orders of magnitude for how fast our computers now, and I don't think computers will be growing at that rate in terms of power unless new breakthroughs are found.
The general rule of thumb for cryptanalysis attacks is that they become cheaper over time (usually quicker than initially proposed), which is why finding issues (even mathematical issues that aren't yet practical) is so important.
Considering the length of time that it takes for new encryption standards to be proposed and accepted, it's important to try and stay ahead of the curve.
If you are using AES directly in your code, you should be very, very worried no matter what the research says, because you are vanishingly unlikely to have gotten it right.
It's a ways off in terms of orders of magnitude for how fast our computers now, and I don't think computers will be growing at that rate in terms of power unless new breakthroughs are found.