Google Nexus 5 (2015) is expected to be released in October or November as Nexus 6 will be completing a year cycle in the market by then. Korean website Post (via GforGames) has reported that it will be launched on 29 September.

What We Know So Far:

Google is collaborating with LG again to make Nexus 5 (2015) under the codename "LG Bullhead" and Huawei will make Nexus 6 successor under the codename "Huawei Angler", according to a report by Android Police

The Nexus 5 (2015) is expected to come with a different design. The upcoming device is expected to be based on an unreleased model and not LG's current flagship device, the G4.

The device is expected to have the latest operating system, Android 6.0 Marshmallow. It is also expected to sport a 5.2-inch display, powered by Qualcomm Snapdragon 800 processor, packed with 3 GB RAM, 13 MP rear camera, 2 MP secondary snapper, non-removable 2,300 mAh battery, fingerprint sensor and Android Pay.

A report by GizmoChina has claimed that Nexus 5 (2013) successor will have features like 64 GB internal memory, 4 GB RAM, 13 MP main camera, 4 MP front snapper, 3,180 mAh battery, NFC, Bluetooth 4.2., and USB Type-C connector. 

However, it may be mentioned that the features are not confirmed yet.

There were also speculations that Google might release the smartphone at an affordable price. Geeksnack went a step ahead by claiming that the device will be priced under $500.