Well since Donald and Professor Von Drake didn’t get recast, I assume Goofy, Max, Chip, Dale and Daisy won’t get recast either.
Well, Donald, Professor Von Drake, and Negaduck haven't been recasted, so chances are, Goofy, Chip, Dale, and Max won't be either. At least that's what I assume.
I'm not sure, but I hopefully as a teen. Teen Max would make a great older brother figure to Webby and the boys.
According to a Tumblr post, Max does exist in the new DuckTales universe alongside his father, so chances are he might appear in the third season with Goofy.