Previously, only those paint strokes drawn inside the app can scale large up to paper-fiber level. Now this Vexel Rendering allows also imported RGB image to be scaled up as well. This technique works well only for illustration-type images and not for general images like photos.
The interesting thing is, at moderate zoom level like 20x, you see raster richness with shape details; towards 100x and beyond, you start to see shaded vector shapes. The transition is smoothly done in real-time by the GPU.
Expresii can now also export artworks at up to 32k x 32k pixels. When it was first released in 2016, it was only up to 12k x 12k.
Read more about the vexel rendering update in this blog post: