Rumors say Sony has an entire Xperia Z5 family ready for release before the end of 2015

We've seen the Xperia Z3+, the Xperia Z4, and the Xperia Z4V launch in 2015, but now rumors are gathering the Xperia Z5 may also come along before the year is over. Is it possible? Here is everything we think we know about the rumored phone so far.

A release by the end of the year?

An unsubstantiated rumor report, published in early July, states Sony will launch the Xperia Z5 in September. Not only that, but it may also release a Z5 Compact and a Z5 Ultra to accompany it. This line-up was also discussed in an April rumor report. The IFA tech show in Berlin is scheduled for the beginning of September, making the rumor sound plausible, but the company decided against bringing any high-end smartphones to the show in 2014.

While it's possible Sony is working on the Xperia Z5, to release it in September would give the Xperia Z3+/Xperia Z4 very little time on sale before being superseded. In the past, Sony followed a six-monthly, minor refresh pattern for its top range smartphones, but it was rumored to have ended this practice.

It's also possible Sony may only launch the Xperia Z5 in Japan, which follows its strategy with the Xperia Z4. If so, we should expect renamed variants for the international market sometime afterwards. However, none of this is official yet, and it should all be treated as speculation.

Snapdragon 820 may power the Xperia Z5

According to a new rumor, which doesn't have a source, the Xperia Z5 will use the highly anticipated Snapdragon 820 processor, along with 4GB of RAM. Qualcomm isn't expected to have the new chip ready until close to the end of 2015, but it's already being linked to several big-name future smartphones.

Other features include a 21-megapixel camera, 4K video recording, and a large 4500mAh battery. There's also a chance Sony may add a fingerprint scanner to the Xperia Z5. A rumor published back in April stated the Xperia Z5 would use the reversible USB Type-C connector.

Nothing is known about the Z5 Compact or the Z5 Ultra, but at the risk of stating the obvious, if they do exist expect one to be smaller and the other to be larger than the regular Z5.

There isn't much to go on yet, and given the current Xperia flagships have only just gone on sale, the Xperia Z5 may still be a long way from release, despite what these early rumors say.