After naming Android 8.0 as Oreo, Google has announced 8.1 version named as Oreo and a number of devices are expected to get Android 8.1 Oreo update. Interestingly it has a feature to reduce inactive app size in order to save space.
The Android Oreo penetration is very slow considering the fact that it runs just on 0.3% devices. Only Pixel and few Nexus devices are on Android Oreo and many are expected to get the update because manufacturers are currently testing betas updates. More than 70 smartphones are expected to get an upgrade from Android Nougat to Oreo and not all we will get the upgrade from Oreo 8.0 to Oreo 8.1.
As of now the Android 8.0 factory images are available for Pixel 2 XL, Pixel 2, Pixel, Pixel XL, Pixel, Pixel C, Nexus 6P, Nexus 5X. So those devices will get an update to 8.1 Oreo very soon. Apart from that Sony Xperia XZ1 was the first device to be announced with Android 8.1 Oreo out of the box. That too will be updated to 8.1 very soon.
Android One phones like General Mobile GM 6, 5 Plus, Y!Mobile Sharp X1 and Xiaomi Mi A1 will get the update to Oreo soon.
Samsung will be the first carrier to list down most phones getting the Android 8.1 update. Samsung Galaxy Note 8, Galaxy S8, Galaxy S8 Plus, Galaxy Note FE, Galaxy S7, Galaxy S7 Plus, Galaxy S8 Active, Galaxy S7 Active, Galaxy Tab S3, Galaxy A5 2018, Galaxy A3 2018 and Galaxy A7 2018. Sadly some Samsung devices that were updated to Android 8.0 earlier will stay on that version only.
HMD Global cleared that all the Nokia smartphones unveiled by them will get not only Android Oreo update but also Android 9.0 P update too. These include Nokia 8, Nokia 6, Nokia 5, Nokia 3 and Nokia 2 smartphones but it's not sure that all the devices will get updated to 8.1 after Android 9.0 is confirmed.
HTC U 11, U Ultra and U Play are the new devices that are expected to get the Android 8.1 update. From the house of LG, we have LG V30, V30 Plus and LG G6 qualifying for the update. Essential PH-1, Razer phone, OnePlus 5, OnePlus 5T too will get the update to Android 8.1 Oreo.
Some of the carriers will skip the Android 8.0 Oreo in favor of Android 8.1 Oreo the latest version.