So how small will 4K Ultra HD screens get?
In the short term, screen sizes are likely to stabilise at 55-inches and upwards. That's because as the screen size shrinks the advantage of having such a pixel dense display starts to diminish. There's also an irrefutable relationship between screen resolution and viewing distances.
While seating will vary from home to home, generally speaking a large 4K TV will provide an upgrade for a smaller 1080p screen. However, the 4K resolution will ultimately be about more than just definition.
High frame rate UHD broadcasting could have an even greater impact than resolution when services begin – and the benefits of HFR are not restricted to larger screen sizes. When this second generation 4K UHD breaks cover, expect high-frame rate 4K TVs to drop further down the size scale.
How far should I sit from a 4K TV for the best picture?
4K Ultra HD is a much more intimate viewing experience than Full HD. In many respects, the best way to view 4K is analogous to the way we view films in a cinema. Old style cinemas were shoe-box shaped and most patrons sat typically 3-5 screen heights away, because that was the most comfortable viewing distance.
Contemporary cinemas are wider, and now the optimum viewing distance is 1.5 screen heights back. From this vantage point you can take in all the visual information that's available and comfortably fill your field of vision. Translated to the home, that makes the most comfortable distance to view a 65-inch 4K screen approx. 1.5m. Of course, in many homes that simply isn't practicl. Consequently, a large 4K screen is probably best viewed at a distance of between 2-3m; time to rearrange your furniture?
What 4K content is available for me to watch?
Of course the thorny subject confronting any 4K TV buyer today is: "Where's the native content?" The answer, at least in the short term, is that there isn't much of anything.
YouTube offers a nascent 4K channel, but you'll require a powerful PC with a 4K capable graphics card, of which there are few that make economic sense.
But the lack of native 4K isn't quite the big deal you might at first imagine. The truth is today's Ultra HD screens do such a remarkable job with 1080p content that you almost certainly won't feel shortchanged. Rather than just linearly scale, big brand sets utilize all manner of database interpolation to upscale images, and the results are spectacular.
To take advantage of this, Sony has released a selection of Mastered in 4K branded Blu-rays. These are in fact standard 1080p Blu-ray discs, albeit ones based on the best available transfers which take full advantage of available disc capacity. They have also been mastered with a wider colour range than standard Blu-ray platters.
A 2160p upgrade on the Blu-ray standard is inevitable, of course, which will allow for true Ultra High Definition movies to be sold on disc. In addition, Netflix appears to be making good progress with its 4K streaming plans, expected to reach some sort of fruition in 2014.
Sony meanwhile has rolled out a download service in the USA for owners of Sony 4K TVs – however there's no sign of that arriving in Europe just yet.
That said, native 4K broadcasting remains the ultimate goal. BSkyB is just one of many global service providers who have been successfully trialing acquisition and broadcast, as it mulls over the financial potential of a dedicated 4K sports and movie channel offering.
Before that can happen, transmission standards need to be agreed and chipsets made available for a new generation of Sky+ UHD boxes.
When it comes to 4K compression codecs, HEVC (High Efficiency Video Coding) is the most widely talked about, however there are other options. Both Sony and Netflix have partnered with Californian outfit Eye IO for their online 4K services.