I've released one called "
World Cup 2010" in the Entertainment section of windows phone marketplace (if you're not in US, UK, Ireland, India, Canada, or Singapore then change your region to one of those on the marketplace web site, or in the marketplace app on your phone, and you'll be able to get it).
All the matches, news, groups, points, scores, by team, by group, by today, by tournament, and (once the v1.3 update is released) photos of the stadiums and locations, and zoom-able satellite pics or maps of the stadiums (bit like google maps does).
Hope you like it
