Android 4.4.3 KitKat update for several Nexus models and various Google Play Edition devices was expected to arrive in the month of May but that may not happen now, if latest reports are anything to go by.

A report by Android Geeks states the release of Android 4.4.3 KitKat might be delayed once again, contradicting its earlier claim that it would arrive on 23 May.

The much-awaited firmware is expected to roll out first for Google products - Nexus 4, Nexus 5, Nexus 7 and Nexus 10 - before coming to other Google Play Edition devices and those which run on Android 4.4.2 KitKat OS.

HTC ROM developer and leakster LLabTooFeR had earlier claimed on its Twitter handle that Android 4.4.3 KitKat (KTU84F) would come on "Nexus and Google Play edition devices soon". It had earlier said that the firmware was "under final tests and latest flagships like M8 and M7 will get 4.4.3 in near future."

Devices from smartphone makers like Samsung, HTC, Sony, LG and Motorola will get the upcoming firmware update after the Nexus series devices receive it, according to reports.

Android 4.4.3 KitKat update is expected to be made available for Nexus 4, Nexus 5, Nexus 7 and Nexus 10 from the Nexus series; Galaxy S4, Galaxy S5, Galaxy Note 3, Galaxy Tab 4, Galaxy Tab Pro 8.4, Tab Pro 10.1, and Tab Pro 12.2 from Samsung Electronics; Moto X, Moto G, and Moto G Google Play edition from Motorola; HTC One M8, HTC One M7, and HTC One M8 Google Play edition from HTC; Xperia Z Ultra Google Play edition, Xperia Z2 Google Play edition, Xperia Z2, and Xperia Z2 Tablet from Sony; and LG G2, G Pad 8.3, LG G3 from LG company.

Many devices which are currently running on Android 4.4.2 KitKat OS may get the new firmware update in the coming months. There are also reports that Samsung may skip the current OS and jump to Android 4.4.3 KitKat for some of its new devices.

The firmware is likely to be a minor update but would fix bugs like reboots, and problems with Bluetooth and Wi-Fi connectivity in smartphones, besides enhancing the performance.