Will Ultraforge allow for more detail and higher res than others?

The Vulkan-based nodes will work in the same way as Filter Forge does -- you will be able to generate procedural textures that can be rendered into really large bitmaps without the loss of quality.

If we're talking about Stable Diffusion nodes, that's a different story. SD is very dependent on the VRAM size, so you won't be able to generate really large images from it. You'll have to generate images of standard sizes (e.g. 1024x576) then upscale them via Ultraforge's upscaling nodes to your desired resolutions (e.g. Full HD or 4K for this example). Upscaling algorithms are pretty good these days, and if you select the right algorithm for your image, the result should not look pixelated.