Gurman notes that “Apple retail stores are in short supply of the iMac, as well as the 13-inch MacBook Pro and high-end MacBook Pro — two other models that may be due for a refresh.” Shipping estimates for these models show delays extending into November, signaling that Apple likely has something up its sleeve. The timing of the company’s earnings call, which has been moved to November this year instead of its usual October schedule, further adds to the anticipation. Gurman speculates that the launch event could potentially take place around October 30 or 31.