It seems more like it's going to be a 13" MacBook OR updated MacBook Air, only time will tell. There have been a few reports on this now not only the reliable Ming-Chi Kuo but also (the less reliable) Digitimes but also Mark Gurman and now Rhoda Alexander, something is happening just not sure if it's simply an updated Air or a new 13" MacBook version.
https://www.forbes.com/sites/brooke...ech-suggests-two-13-inch-models/#66bd100e4d17
Not sure if this is any indication of which model is being updated but looks like they're clearing out MacBook Air stock. Bestbuy has it on sale for $699!