I've worked since the end of last year to document the release dates of amiibo figures and character releases dates to see how in-close proximity each are to one another. It eventually got a point where I realized that each amiibo wave released would release within around 2 weeks of a character release. Now granted, 2 weeks doesn't happen
every time (and is just a rough estimate of the average) and the largest gap between dates has been 18 days, but nothing has gone above that threshold yet.
So, I decided to take all of those dates, convert them to a universal scale, and make a math equation based on the data!
Turn out the r and r^2 values are near 1! What this basically means is, there is a good degree of relationship between both dates. So, using the equation, it's possible to approximate actual DLC release dates using
just amiibo dates! Now granted, it is just math, so again, it's more so about precision rather than accuracy. And it's not guaranteed that
every prediction will be right. But, it exists!
I only wanted to post about this to show that it is indeed possible! Here's the data chart I have as well!