GW-M5610U-1JF, the successor to GW-M5610-1JF, was released.
The module has been changed out from the 3159 to the 3495, with the following improvement aspects.
White LED Super illuminator
Using a brighter white light than the previous EL backlight, the dial is now more clearly illuminated than ever. (The white light provides contrast, making it more visible than before).
The light would only stay on for 1.5 seconds, but you can now choose between 1.5 and 3 seconds. (A welcome improvement for those of you who thought that 1.5 seconds was too short.)
It now covers more time zones.
The world time, which covered 48 major cities and 29 time zones, now covers 48 major cities and 32 time zones.
Regarding world time
You could previously only choose one city, but you can now choose up to 5 of your preference. (This makes it feel more complicated since there are now more functions to work through.)
This is all I have heard from Casio. Although there may be a few smaller details I may have overlooked…