newsfragments: Add release note for MR !671

Full link: https://gitlab.com/sane-project/backends/-/merge_requests/671

newsfragments/pixma_new_models.backend

@@ -1,2 +1,17 @@
 pixma: Marked Canon PIXMA G4511 as supported in documentation
-pixma: Added support for Canon imageRUNNER 1133A.
+pixma: Added support for the following Canon scanners:
+ - Canon imageRUNNER 1133A
+ - Canon PIXMA TS5350i Series
+ - Canon PIXMA G600
+ - Canon PIXMA TS3500 Series
+ - Canon PIXMA TR4600 Series
+ - Canon PIXMA TR4700 Series
+ - Canon PIXMA E4500 Series
+ - Canon PIXUS XK500 Series
+ - Canon PIXMA TS8530 Series
+ - Canon PIXUS XK100 Series
+ - Canon PIXMA TS7530 Series
+ - Canon PIXMA TS7450i Series
+ - Canon PIXMA GX6000 Series
+ - Canon PIXMA GX7000 Series
+ - Canon PIXMA TS5400 Series