Developer Steven Troughton-Smith has discovered references to four new iPad models, ranging from iPad 11.1 to iPad 11.4, two of which are WiFi and two of which are cellular. These model numbers do not match any known iPad models.
Troughton-Smith speculates that the iPad model numbers could be new iPad mini devices, which would be in line with rumors suggesting a new iPad mini 5 is in the works. According to Troughton-Smith, none of the iPads have Face ID, which is what we would expect as a new one iPad mini is likely to be positioned as a affordable, lower-end device.
There is also a reference to "iPod 9,1," which does not match any known iPod touch devices, suggesting it is a new next-generation model. The current sixth generation iPod touch is "iPod 7.1," for reference. The iPod listed in iOS 12.2 does not seem to have a Face ID or Touch ID, so it's not clear if something is missing or if it has a design with none of these features.
Previous rumors have indeed suggested Apple is working on a 7th-generation iPod touch, an iPad mini 5, and a new version of the lower-cost 9.7-inch iPad, which may be upgraded to 10 inches in its next iteration.
In theory, iOS 12.2 references four new iPads in WiFi & Cellular variants (maybe mini, and 9.7 "?), All without Face ID, and a (seventh-gen?) iPod touch with no Touch ID Cloud Face ID pic.twitter.com/xiJN6kmmTe
– Steve Troughton-Smith (@stroughtonsmith) January 25, 2019
Apple earlier this week registered seven iPads with the Eurasian Economic Commission, and at least some of these could be the four iPad models Troughton-Smith has discovered in iOS 12.2. Those model numbers included A2123, A2124, A2126, A2153, A2154, A2133, and A2152.
We first started hearing about Apple's work on a refreshed iPad mini in late 2018, and since then, chatter has picked up. Rumors have suggested a new fifth-generation iPad mini will be released in the first half of 2019, and with signs appearing in iOS 12.2 and the Eurasian database (where Apple is required to register all new devices), that prediction is sounding more and more accurate.
There's been mixed information about what to expect from an iPad mini update. A case leak suggested a vertical camera and quad speakers, but a photo of an unreleased iPad mini, which could be the new iPad mini, featured an older A9 processor and a design that is similar to the fourth-generation iPad mini.
We will need to wait for additional information to figure out what features the iPad mini will include, but it sounds like it's going to be more similar to the current 9.7-inch iPad than an iPad Pro. As for a launch date, it looks like it could potentially come when iOS 12.2 is released, perhaps in late February or early March. The rumored 7th-generation iPod touch could be released at the same time.
Apple has held events in March for the last few years, so it would not be a surprise to see another March event in 2019.