Big news! It seems that he has identified the bottom and is confident that a recovery is under way. Berkshire now has a bitcoin department which is why the price pumped this past week. Go get some!
*EDIT (10.30pm 1 April 2019)*
Happy April fools! jajaja

Although this time next year it might actually be true

So this was clearly an April fool joke, However, I would not be surprised to see Warren Buffet one day buying into bitcoin, one way or another. If he sees a good entry point and an even better exit point, then why should he not take that profit, a bitcoin EFT will maybe be the start of Warren Buffet crypto adventure?