On the topic of Heihachi being confirmed, I found out around the same time that Heihachi was confirmed for PSAS, Namco Bandai were reporting that as of this time they had no intention of including any Tekken characters in the upcoming Super Smash Brothers games, which would be fine if it wasn't for the fact that they are co-developing said games
They claim the reasoning behind it is because they cannot see Tekken characters being very well recieved by the audience that would buy the game, this of course is despite the fact that Tekken is handily topping every poll regarding the inclusion of any Namco Bandai IP in SSB and the aforementioned fact that you have included a Tekken character in the game that will be your game's direct competitor.