Users of Lenovo devices must be excited to learn that Google's latest firmware Android 6.0 Marshmallow update will be rolled out to some of the company's popular smartphones, but their happiness could be short-lived if the tentative update schedule of the firmware to Lenovo device turns true.

Lenovo device owners will expect Android 6.0 Marshmallow update in a few months' time as it has already been rolled out to Google Nexus 5, Nexus 6, Nexus 7 (2013), Nexus 9, Nexus Player, Android One, and LG G4. But there is a reason for users of Lenovo devices to be upset as their handsets may receive the firmware almost a year from now, which is a long wait.

Popular smartphones like Lenovo K3 Note, Lenovo A7000 and Lenovo A7000 Plus are scheduled to get Android 6.0 Marshmallow update only by September 2016, according to a report by GSM Arena citing information from Lenovo Support page. 

This piece of news will come as a big disappointment for thousands of Lenovo K3 Note, Lenovo A7000 and Lenovo A7000 Plus users. Firmware update in September means some devices, especially Google handsets, will receive new firmware, perhaps Android N in a few weeks. Some users of Lenovo devices may even go for handset upgrade even before their current smartphone tastes Marshmallow.

Meanwhile, the recently released Lenovo Vibe S1 and Lenovo Vibe P1 are expected to receive the firmware in June 2016. It is still not known whether the current flagship device, Vibe Z2 Pro will get the software update, as Lenovo didn't include it in its list.