Apple is adding virtual memory swap to iPadOS 16, allowing apps on the recent iPad Pro and iPad Air models to use free and available storage as extra memory for demanding workloads.
With iPadOS 15, certain apps can use up to 12GB of memory on the highest-end M1 iPad Pro which has 16GB of total RAM. With iPadOS 16 and virtual memory swap, Apple is significantly increasing the amount of memory an app can use by tapping into available storage on the device.
For M1 iPad Pro models, apps can use up to 16GB of memory for the most demanding workloads. Apple's footnote on the iPadOS 16 preview page says this also applies to fourth-generation iPad Air models with at least 256GB of storage, but this is likely a typo as it would make more sense to apply to the fifth-generation model with the M1 chip.
Virtual memory swap and the higher memory ceiling join a list of features coming with iPadOS 16 that are exclusive to the M1 iPad Pro and iPad Air, including Stage Manager. In fact, Apple told Digital Trends that Stage Manager relies on this virtual RAM swap, indicating that the fifth generation is indeed the correct iPad Air model.
Stage Manager is an entirely new way for pro-users to use their iPad, allowing users to have multiple windows of an app opened at once, overlaid on top of each other. Stage Manager also enables full external display support on iPadOS for the first time.
iPadOS 16 is currently available to developers, with a public beta planned in July. iPadOS 16 will be available to all supported iPads later this fall.
Update: This article has been updated to address uncertainty over which iPad Air model this feature is included on.
Source: Macrumors