This isn't a huge upgrade over the Z3, which does make sense as to why Sony went with Z3+. Some of the newer elements of the Z3+ for a slimmer look, lighter design, it's definitely waterproof, but the interesting part is that Sony has opted for the controversial Snapdragon 810 processor.
If you're interested in more information, check out the press release:
"London, 26th May 2015 – Sony Mobile Communications ("Sony Mobile") today introduces a premium addition to the Xperia™ Z3 series flagship smartphones with Xperia Z3+, a slim, sleek and stylish high-performing premium smartphone.
Xperia Z3+ helps you get the best pictures with Sony's superior camera technology that is now packed into both the main and front cameras. Impressive smartphone battery stamina and performance
Beautiful design, better than ever
Slimmer (6.9mm), lighter (144g) and expertly crafted, Xperia Z3+
Z3+ comes available in a choice of four sophisticated
Great pictures anywhere
Z3+ continues to offer the best of Sony's Cyber-shot & Handycam technologies, to ensure a superior camera performance, and extends the camera
The main camera features the 20.7MP camera with Exmor RS™ for mobile image sensor, BIONZ™ for mobile processing engine, and a 25mm wide-angle G lens. Create the best shots first time, every time with improved Superior Auto – it automatically
The new 5MP front camera with Exmor R™ for mobile image sensor means you can now get better selfies in any light. And the 25mm wide-angle lens is perfect for group selfies. Superior Auto analyses the photographic environment and automatically adjusts settings to make you look great every time. Full HD 1080p
Powerful performance and up to two-day battery life
Xperia Z3+ comes packed with the ultra fast Snapdragon 810
Powerful smartphone features demand smart power management. Xperia Z3+ is equipped to let you enjoy whatever you like doing for as long as you want. Sony's incredible up to two-day battery stamina and innovative power-saving technology combine to give you superior long-lasting battery performance. And now you can get one day usage with just 45 minutes of charging when using a Qualcomm® Quick Charge™ 2.0 certified charger, such as the UCH10 accessory.
Keeping you entertained
Xperia Z3+ features an ultra-bright 5.2" Full HD smart adaptive display that provides increased brightness and contrast, without losing stamina. Sony's TRILUMINOS™ Display for mobile with Live
Sony's rich expertise in audio technologies lets you enjoy sound in incredible detail and clarity.
For those times when you need to block out background noise, Xperia Z3+ supports digital noise cancelling and pairs with the MDR-NC31EM headset, reducing ambient noise by up to 98%. And now you can enjoy optimal audio settings when connecting any headphones, as Z3+ senses both the type and style of headset and automatically adjusts the audio settings accordingly for
Keep playing your
And to ensure you continue to enjoy the best experiences that Sony has to offer, all Xperia Z3+ users will benefit from access to Xperia Lounge Gold - delivering the world of Sony entertainment at your fingertips. Get access to exclusive competitions and offers; be among the first to try out new apps; and enjoy the latest movies, TV episodes and music included with your device."