Just as it did with Android, Microsoft is gearing up to bring its Cortana virtual assistant to iPhones. The beta release of Cortana won't have all of its features -- you can't say "Hey Cortana" to wake it up, for example -- but it sounds you'll be able to ask Cortana questions manually and add reminders. Basically, it'll have the same limitations as the current Cortana Android beta. If you want to be a Cortana guinea pig, fill out this survey to sign up for the beta and sit tight for a download link over the next few weeks. Be warned, though, Microsoft also says it's only looking for a "limited number"of people to try it out, and it's currently only available in the US and China. You can be sure it'll open up the Cortana for iPhone beta even more eventually.