Recent reports claim that the iPhone 11 will come in 3 different sizes like the previous iPhone XS and XR models. This means 5.8-inch, 6.5-inch, and 6.1-inch displays will be available. Other rumors for the next-generation device include ultra-wide band, bilateral wireless charging for charging AirPods and other devices, frosted glass finish, better batteries, upgraded triple camera design, and upgraded flood illuminator.
Apple is expected to hold its first 2019 event in March, and WWDC is rumored to be scheduled for June 3rd through June 7th in San Jose, California. It is unlikely that we will see any new iPhone models until September when Apple will hold a separate event.