Microprocessors are getting so tiny that they're actually small enough for quantum mechanics to start affecting their performance. That's bad news for traditional computing, but it's led to a breakthrough in spintronics, getting us a step closer to quantum computers.
Although "electronics" is often thought of as a sort of general technological short hand, it actually has a very specific meaning - all electronic devices take advantage of the controlled movement of electrons, using the individual subatomic particles as units of information. Spintronics, on the other hand, utilizes the spin of the electrons. (For an explanation of spin, check out this post.)