Cortana will soon have a lot more skills to show off

Microsoft is finally ready to open its assistant up to developers. The Cortana Skills Kit, which allows developers to integrate their services with the assistant, is now in public preview, Microsoft announced. The news comes just days after Harman Kardon unveiled the Invoke, its Cortana-powered speaker. SEE ALSO: Hey, Siri: How'd you and every other digital assistant get its name? Microsoft first teased the Cortana Skills Kit when it announced the speaker late last year, but hadn't made it widely available to developers.