So this french journalist dude posted a tweet in Francais. Here's the translation:
Yu Suzuki declares to be thinking about a kickstarter-like model to fund Shenmue 3 !
So, I've never played a Shenmue game, but I think it's pretty much a cult hit right? So a lot of people would be willing to back this is my guess, but I'm not sure how far that would take this game considering the cost of game development.