All(?) the necessary info about how to enable it etc. are in this mail, but there are things that better fit a blog post than a mail, and in this case that's going to be a table and a picture showing how well it may perform. Note that these results are from running visualbackendtest, which is not really a benchmark, so these numbers should be taken with a grain of salt. It's just a test that draws a gradient, several big polygons (each circle is actually 720 lines) and short text.
|Linux gen (X11)||86|
|Linux Skia Vulkan (GPU)||65-90|
|Linux Skia raster (CPU)||5|
|Windows Skia Vulkan (GPU)||175-185|
|Windows Skia raster (CPU)||75-85|