This past Thursday saw the release of a brand new costume pack for Hot Shots Golf 5 (Minna No Golf 5 in Japan).  For 600 Yen (approx. $6 U.S.), you can have 5 new sets for your existing characters. They include a ninja costume that resembles Hayabusa from Ninja Gaiden and DOA fame, two Street Fighter knockoffs resembling Chun Li & Ryu, and finally a Sailor Boy and Baseball Player  costumes.  Each costume has 2 different color schemes to them.  This is the 2nd pack released of costumes in Japan, and I would expect both to be released in the states by the end of the year.  You can check out the pics of the new costumes below, courtesy of Dengeki.

Also coming out in Japan is a "Real Conference Ranking" where you will be put on to a Ranking Board as rounds end, which is a nice little feature that is missing from many PS3 games.  So expect this feature to hit the states soon as well.