Samsung may have newer devices on the market now, but it hasn’t forgotten about its Galaxy Note 4.

The South Korean company is hard at working on a big Android 5.1.1 upgrade, and sources say it could be optimized for the 64-bit Exynos processor that ships inside certain models.

SamMobile has obtained AnTuTu benchmarks that prove Samsung has been working on an Android 5.1.1 update for the Note 4, which all but confirms the device will get refreshed firmware before Android M arrives this fall.

It’s not yet clear what the update will bring, but sources have told SamMobile that it will be optimized for Note 4 handsets with an Exynos processor, which are predominantly sold outside of the U.S.

If this is true, Android 5.1.1 could dramatically improve performance on some Note 4 handsets — though those with a Snapdragon-powered model won’t enjoy the benefits — but we’re warned to take this particular rumor “with a pinch of salt.”

We don’t yet know when Samsung’s Android 5.1.1 update will reach the Note 4, but it’ll likely be some time after it arrives on the Galaxy S6 and S6 edge — both of which are still waiting.

• SourceSamMobile