Of course the curved screen makes it stylishly different than any LED/LCD or Plasma TV, as they are all flat, but, in addition to its curved LCD panel, two things that make this TV different from its curved screen OLED rivals is that it comes in a larger 65-inch screen size, rather than 55-inches, and the priced is thousands less.
In addition to its curved screen and native 1080p display resolution, Sony also incorporates Triluminos Quantum Dot technology, X-reality Pro video upscaling and processing engine, built-in Wifi with access to a host of internet and network streaming content, MHL connectivity for smartphones and other compatible portable devices, and comfortable passive 3D (four pairs of glasses included).
For audio the KDL-65S990A incorporates a new 4-channel audio system that features six front facing and two surround speakers that are angled in slightly different directions to provide both more pronounced center channel dialog and immersive surround sound than you would normally get from built-in TV speaker system. The speaker system is additionally supported by Sony's S-Force Front Surround Audio processing.
The Sony KDL-65S990A is expected to be available beginning in late October, 2013 at a suggested price of $4,999.99. However, it is currently available for pre-order via the Sony Website for $3,999.99. For a complete rundown on features and specifications for this innovative TV, check out the Offical Sony KDL-65S990A Product Page. Image provided by Sony Electronics
Just as a side note, although the KDL-65S990A is a lot less expensive than its curved OLED TV cousins, it is about the same price as Sony, Samsung, and LG's 55-inch 4K Ultra HD TVs, and only about $1,000 less than their 65-inch 4K Ultra HD TVs, but those are flat. Let's see, 1080p curved vs 4K Ultra HD flat - I would probably opt for the 4K Ultra HD flat myself - what would you prefer?