Haptic feedback is a feature that provides a slight vibration when you tap the screen.
It's ideal for touch screen keyboards since it provides tactile feedback each time you press a key - making it feel like you're actually typing rather than just tapping on glass.
The report refers to this feature as Apple's "secret weapon" for the iPhone 6, citing anonymous industry sources. Since the report mentions how much it costs to build this haptic feedback motor, it's probably safe to assume that GForGames is talking to someone in Apple's supply chain.
Most Android phones already have haptic feedback.
Apple's would differ, however, in that the iPhone 6's display would supposedly be able to offer different types of subtle vibrations when touching different areas of the screen.
It's unclear exactly how this would work, but it presumably means that vibrations could change in duration or strength depending on what you're touching.
From what we're hearing, it seems as if the iPhone 6's display will be one of its standout features. In addition to this reported haptic feedback feature, a video from earlier this week claimed to show how incredibly durable the iPhone 6's sapphire crystal screen will be.
We won't know exactly what the iPhone 6 will bring until Apple officially unveils the device, which will presumably happen in September. It seems very likely that the next-generation iPhone will feature a larger 4.7-inch display and will be much thinner than the iPhone 5s. Previous leaks and rumors suggested it could have a similar design as the iPad Air, but we'll have to wait until September to be sure.