I doubt iOS 11 will have any new iPad features. From a big perspective, iPad is at an evolutionary plateau. It's not where the main battle is at and it doesn't make sense to throw iOS resources at iPad.
Strategically, Apple's focus is on gaining smartphone market share worldwide. Apple is having trouble breaking into China because of how WeChat is used in everyday lives.
From a tech usage perspective, China is about a half decade ahead of the rest of the world in using phones to pay for lunch, dinner, taxis, utility bills, and transferring money between each other. In order for iOS to remain relevant, Apple needs tighter integration into the daily lives of the users from movie tickets to Groupon to health. It's a matter of time before another WeChat-like platform shows up outside China.