Apple on Monday released the latest version of its mobile operating system, iOS 7.1. The new build for iPhones, iPads and iPod touch devices includes a number of bug fixes, visual changes and some new features such as CarPlay support. According to a new report from 9to5Mac, however, it also includes references to two unannounced iPad models that Apple plans to launch sometime in the future.

As can be seen in the screenshot above, iOS 7.1 adds support for an iPad 4,3 and an iPad 4,6, neither of which exist at this point. 9to5Mac believes that the devices may be minor updates that Apple plans to roll out at some point soon without much fanfare. This is something Apple has done in the past with minor device updates.

The report also notes that the iPad 4,1 and iPad 4,2 are Apple’s current iPad Air models and the iPad 4,4 and iPad 4,5 are Retina iPad mini tablets, so we should be looking at new additions to each class of Apple tablet in the near future.