Apple on annual unveiled a new MacBook Airs Pro laptop with a high-resolution screen . The company also announced improvements to its Power Nap voice `` assistant '' CEO Tim Cook led the keynote at Apple 's Monday developers ' conference . MacBook Airs also unveiled upgraded MacBook Airs plus operating systems with new features .
Apple on Monday unveiled a new MacBook Pro laptop with a high-resolution screen . The company also announced improvements to its Siri voice `` assistant '' CEO Tim Cook led the keynote at Apple 's annual developers ' conference . Apple also unveiled upgraded MacBook Airs plus operating systems with new features .