If you use an iPhone 5s or older and have upgraded to iOS 9.2 then get ready to be annoyed with ads for the iPhone 6s when you use the App Store app.
Yes, Apple is now advertising its newest iPhone on older iPhones. The issue was first reported on Twitter [NSFW] and has been independently verified by ZDNet. The ad invites users to "learn more" about the iPhone 6s, or to upgrade immediately.
The ad is particularly annoying and intrusive because it requires the users to skip the ad manually, interrupting the user's workflow.