This comes directly from Nintendo Power, and I just confirmed it via my issue. A NP interview with Camelot…
NP: Is there any other new content for the North American version of the game?
Camelot: We are right in the middle of developing and debug testing for North American and European versions of We Love Golf! The major content newly added is the online gameplay, in addition to support for multiple languages in North America and Europe. Also, in addition to the new charactes, we tweaked the graphics a little in order to appeal to international players. Furthermore, we’re rethinking the swing speed as well.
NP: Among the modes, we think that the new online mode is the most fun! Now you can play with a friend in you neighborhood as well as anyone in the world. When you beat another player, their character’s face is added to your play sheet, so players will want to collect as many as possible
Now that is a nice addition for the game when it hits the states! Thanks to Titankiller for the heads up!