Apple's annual confab for its developers, the World Wide Developers Conference, begins on Monday with a highly-anticipated keynote from Tim Cook, who's expected to announce a new version of its mobile operating system iOS. But rumors have also been swirling that Cook could unveil a Siri-powered digital assistant, as well as upgrades to all three of its MacBook laptops, a new iPad Pro and a refreshed MacBook Air.

TheStreet's technology columnist, Eric Jhonsa, and Zev Fima, an analyst with Jim Cramer's Action Alerts PLUS Charitable portfolio, which owns Apple, will be live blogging Cook's keynote beginning at 1:00 p.m. ET. Please share your questions in the window at the top of the live blog.