Apple surprised the world with the wonderful iMac with a screen retina 5k at the end of 2014, but it seems that from Cupertino they want more, although you always have to take everything with a grain of salt because it may be a mistake when writing the article by LG.
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LG posted in his official blog following:
It has become clear that Japan is planning to launch a test broadcast in 8K and then restructure the UHD service. Apple has also announced that it is launching an 8K iMac with a high-resolution display at the end of the year.
If we look at other times when something like this has happened, it is normal to think that it is an error from LG and that they have simply been wrong. But we cannot rule out the irruption of an 8K iMac at all, more than anything because LG already works on 8K panels and because LG is the company that supplies the most panels to Apple for its entire range of computers, from laptops to desktops.
Nor can you help but think of a 8K Thunderbolt Display oriented to professional areas with a size of 31 or 32 inches, although this would make an update of the current Mac Pro mandatory since with current standards it is not possible to move screens of this resolution, and it is necessary for the computer to have the corresponding buses and with the DisplayPort 1.4a connector.
For now we can only wait to see how the year evolves, and then we can assess if LG made a mistake unveiling Apple's plans or if it was simply a mistake in the wording.