Until now, Siri's been little more than a slightly sassy sidekick for iPhone users. It's gotten better over time, in the sense that it's more accurate in understanding what you're asking, but it's not a whole lot more useful than it was at launch.
Today, though, Apple made a big move to make Siri work for more people, by opening it up to third-party developers and bringing Siri to the Mac. Long-term, this means you'll be able to connect Siri to the apps you actually use, instead of having to use Apple Maps and Apple Music and Apple Mail and all the other apps I stuck into a folder marked by the poop emoji.
Not only that, you'll be able to use Siri on your PC, to make a lot of simple actions easier: adding things to your calendar, doing quick research and calculations, setting reminders, playing music, even searching your computer. Siri can search Finder, finding you files from last week about the offsite and then showing you the ones you tagged as draft. Click on a button and it pins into your notification center, for easy finding later. The voice assistant can do more on the Apple TV as well: Siri has improved topical searches for movies and TV shows ("Horror movies from the '80s") and you can now run voice searches for YouTube videos.
For the things Siri does well, it's an unbeatably fast interface. Now Siri can do more things, and do them more places. Maybe Siri can fix its bad rap after all.
