Our old 42" TV gave up the ghost this week, and after a bit of searching I can't seem to find a better deal for a 65" 4K TV than this one at JB Hi-Fi. According to my quick phone call with the staff, JB Hi-Fi is running out the Soniq brand for their own replacement, so these units are going pretty cheap. My local store had heaps in stock so hopefully it's the same Australia wide.
Basic specs include:
UltraHD 3840x2160 resolution LED Backlight Panel
ACE-PRO advanced color engine, which makes image more fresh and brighter
Quad core Cortex -A7 1G processor, provides high performance computing to meet more advanced application requirements
4.4.4 Android operating system
Built-in Web Browser
Built-in WIFI comply with 802.11b/g/n standard
USB Host 2.0 or 3.0 for Multimedia Playing, HID device supported
Efficient energy saving mode
2x HDMI inputs
This particular unit is basically the same as the older UX16A model, but has better dedicated speakers on it, which are confirmed to be removable (Thanks Raynes!).
I've also been told that a firmware update and display settings tweaks are a must to get good image quality (something to do with the default sharpness settings makes it look rubbish) and that the built-in Android is a bit old and hopeless, so you're best off pairing it with a proper Android TV box unit or Chromecast IMO unless you have very basic needs. We already have a Xiaomi Mi Box and dedicated sound system, so I'm essentially using this as a glorified monitor, so it works perfect for me.
Edit: There are also 50" and 55" versions available for $399 and $449, respectively, but I haven't really looked into those: https://www.jbhifi.com.au/?q=Soniq
Quality aside that must be the cheapest new 65" ever