Whenever Android upgrades to a new version, the next thing to come is a new version of the Google Nexus phone. It is possible that with the release of Android M will come a very soon, if not immediate, release of the new Nexus phone. It isn't known what the new number will be, if it will be a new Nexus 6, Nexus 7, Nexus 9, but most suspect that it will be a 2015 edition Nexus 5. This is what we do know about the Nexus 5, 7, or 9 Google Nexus Release Dates, and it looks like there will be two new versions this year.
Right now, there are a lot of leaks going around as far as what the next Nexus device will be. According to Phone Arena, some new cases might be a key to the mystery of it. These cases appeared on Oppomart, and they show a case for the Nexus 5 (2015).
Considering that the Nexus 5 has not be currently been announced yet, it is possible that Oppomart was able to get the information from Google and build a case, but might have ignored the part in the contract about the embargo. If the link has not been taken down, the $8.99 case can be found here.
The case reveals some interesting features of the Nexus 5, assuming that will be the name that Google will go with. The device has a camera hump on the back, and a fingerprint reader near the same place. A dual flash and laser autofocus can be found to the left of the rear camera.
According to Know Your Mobile, Google's iteration of its 2015 will be either built by LG or Huawei, and there will be two new Nexus handsets for 2015 (which is a first for the Nexus series). Huawei is apparently building the larger of the two devices with a Snapdragon 810 CPU and 5.7 inch display for a launch in late Q3 2015. A leak from PC Advisor shows that the Huawei device has a metal body, Type C USB, as well front facing speakers and a fingerprint scanner on the back.
As for the device form LG, that will be the smaller of the two devices, which is said to be a 5.2 inch display with Snapdragon 808. Other rumors are that it will come with a Qualcomm Snapdragon 620 processor, up to 4 GB of DDR3 RAM, USB Type-C with Quickcharge 2.0, up to 64 GB of storage, a 3180 mAh battery, a MediaTek connectivity chipset, front-facing speakers, and a rear power button with an integrated fingerprint scanner. As for the cameras, they will be 13 Megapixels on the back and 4 Megapixels on the back.
In addition to Android M, also known as Google 6.0 or Marshmellow, there will be Android Pay, which is the Google version of Apple Pay. This will be a mobile payment system that will be similar to Google Wallet, a system that was also tried on the Nexus series. Considering that a lot of businesses are being set up for mobile payments lately, Android Pay could stand to make quite a financial killing in the 2015/2016 shopping season.