According to reputable supply chain analysts who spoke with MacRumors on condition of anonymity, Apple could announce some new products later this month, most likely between Monday, March 20 and Friday, March 24.
We already know that Apple will be previewing major updates to iOS, macOS, watchOS and tvOS at its annual developers conference, which this year kicks off with a keynote on June 5. We also know that the Cupertino company usually saves the best and most important product upgrades for September (iPhones, iPads, Macs and major iOS and macOS software upgrades). So, what could Apple be unveiling at a March press event?