You're correct! Just maybe we'll have a second guest as DLC!
Not from Latin America, but answering anyway:If it's an SNK guest character my bet is on a popular Samurai Shodown character. I hear the reasons why Geese was brought to Tekken was not only because Harada is a massive Geese fan but King of Fighters is extremely popular in places like China, South Korea and some Latin American countries. If the decision is going to be on similar lines I just want to ask some of the Latin American folk in here, is Samurai Shodown still popular or was it popular in your country? If so who were the most popular characters? This will give me an idea on who to expect if it is going to be a Samurai Shodown character.
It's like they forgot Broken Destiny exists.