First Disc with 4.2 update
So here it is the first disc that I'm aware of that comes with System Menu 4.2 loaded, along with the Stub System IOS60 v6400 and IOS50 v5120.
Endless Ocean 2. (PAL) comes with System Menu v482
In addition the disc partition also includes stubs for:-
Here's a screenshot of it's display in Wiiscrubber (3 images joined not very well)
Endless Ocean 2 is due out in USA etc a little later in the month, I wonder what update that'll have. The Jap version, apparently, was released some time ago (sept 2009) so would not have 4.2.