While Apple has only given a “Spring” release timeline for iOS 11.3, audio tool manufacturer Shure seems to have let the cat out of the bag that the update is coming this week, according to PiunikaWeb. In a weekend response to a customer question about problems with a specific condenser microphone, Shure’s Twitter account replied that “iOS 11.3, due out next week, resolves it.” The tweet has since been deleted, so time…