Model numbers for what are assumed to be the 2019 iPhones have appeared in Eurasian Economic Commission regulatory documents.
Eurasian Economic Commission (EEC)
Eurasian Filing Reveals 6 Apple Watch Series 4 Models
A recent Apple filing in the Eurasian economic database lists six new Apple Watch models, helping confirm rumors saying Apple Watch Series 4 is coming this fall.
Apple Eurasian Regulatory Filing Indicates 5 New Macs, 5 New iPads
The regulatory filing specifies that the Macs will run macOS High Sierra, while the iPads will run iOS 11, strongly suggesting these new devices will be announced soon.