diff --git a/Seed-breaking-changes.md b/Seed-breaking-changes.md
index 481e42d..2004ab4 100644
--- a/Seed-breaking-changes.md
+++ b/Seed-breaking-changes.md
@@ -1,3 +1,15 @@
+# 2023-01-03 - Hires fix rework
+Rather than using width/height to specify target resolution, width/height is used to specify first pass resolution, and a slider is used to set multiplier for up scaling. New Hires fix does not crop image.
+
+Here's how old and new settings correspond to each other:
+
+| Old version                               | New version                                                                                     |
+|-------------------------------------------|-------------------------------------------------------------------------------------------------|
+| Size: 1024x1024                           | Size: 512x512, Hires upscale: 2.0                                                               |
+| Size: 1280x1024, First pass size: 640x512 | Size: 640x512, Hires upscale: 2.0                                                               |
+| Size: 1024x1280, First pass size: 0x0     | Size: 512x576 (auto-calcualted if you use old infotext), Hires upscale: 2.0                     |
+| Size: 1024x512, First pass size: 512x512  | Impossible since this crops the first pass image to 256x512, and new hires fix does no cropping |
+
 # 2023-01-01 - Karras sigma min/max
 Some of discussion is here: [PR](https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/4373)