Since Xperia Z4 already available, the Xperia Z5 will be the next Sony's flagship which is foretold to be announced in September at IFA 2015. The Sony Xperia Z5 will reportedly build a benchmark for the company.

The reports say that the Sony's new flagship design and powerful specs will bring it a far better smartphone. The Sony Xperia Z5 is speculated to utilize Qualcomm's yet to be released Snapdragon 820 chip in a proposal to prevent overheating issues. This year's Mobile World Congress, the processor was shown off, and will feature a new machine learning feature dubbed Zeroth and Kryo 64-bit CPU technology.  According to rumors, the chip seems equipped to come with a 4GB RAM.

Moreover, another point to give emphasis is the Xperia Z5 powerful battery. Everyone knows that high end devices deal with a crucial battery backup time. Having a 4500 mAh battery really sounds good and Sony is working on it to lessen the charging time from "2 hours" to "30 minutes" which indicates the possibility of charging a 4500 mAh in just half hour.

The rumors also stated that the forthcoming Sony Xperia Z5 will probably have a larger screen than its predecessor, and the speculation points to a 5.5in display with a 4K resolution. What's more, the latest Sony Exmor RS IMX230 based CMOS sensor with 4K video recording support, HDR and 21 million pixel are also expected to be added for the upcomingmobile gadget.

According to the circulating rumors on the web, Sony is more likely to revolve the Xperia Flagship towards the gaming smartphone. This all has been decided and speculated, according to the Xperia Z3+ Sony came up with.

Last but not the least, the return of the Ultra model is highly expected to be seen in the Xperia Z5 range. The Xperia Z Ultra with a huge 6.4in screen making it one of the biggest phablets was launched by Sony last 2013, thus we can expect something similar from the Xperia Z5 Ultra.

One report speculates that the expected price of Sony Xperia Z5 will be around $1000 USD which is 60K in Indian currency (INR).  Technodify also reported that the Xperia Z5 will be released in September in Japan, putting it a battle with the Galaxy Note 5 and iPhone 7.