A new blog entry from libretro with some interesting news:
This time it is mostly for people using powerful hardware, this includes CPU and GFX cards, to run their games on: Resolutions supported up to 16K! That should be enough details for everyone out there.
What does that mean exactly?
- Dolphin supports now resolutions up to 12k, which is 12160×10032
- OpenLara can run at 16K or with 16000×9000 pixels
- Craft (Minecraft clone) also 16k; 16000×9000 pixels

There is also news on a new software-based renderer Angrylion for the Nintendo 64 core, which is also target currently only at high-end CPU’s.
For further details and more impressive screenshots check out the libretro blog post:
https://www.libretro.com/index.php/cores-progress-report-catering-to-high-end-desktops-dolphin-libretro-core-and-others-now-supports-resolutions-of-8k-and-up/