Russian trademark filings point to three new new MacBooks running macOS Sierra, the products have apparently passed the Russian registration, labelled as ‘portable personal computer models’ with model identifiers A1706, A1707 and A1708. This lends credence to the speculation that the 'hello again' event in Cupertino, for which selected Apple media were invited to (but which will be livestreamed for all to see), will focus on the Mac and most likely notebooks.
Looks like we might be seeing two MacBook Pros (13 and 15 inch) and a 13-inch MacBook that's based off the 12-inch MacBook design. The source, which also leaked the iPhone 7 and iPhone 7 Plus as well as the Apple Watch Series 2. Unlike iPhones, other Apple products are usually available for pre-order on the day of announcement or might likely even be available in retail stores shortly after the launch.
Source: 9to5Mac