Heath Ledger made out his will a couple of years before his daughter was born, leaving everything (then about 100K AU$) to his parents and sisters. He never updated it after Matilda was born, so essentially she would inherit nothing.
However, the will has now been probated, and Heath's father, Kim ledger, states:
"Our family has gifted everything to Matilda"
"Everything" here is about 20 Million dollars, the article doesn't specify US or AU dollars, but either way, that's a boatload of money.
Here's to family who knows what it's all about. And Heath can truly rest in peace now.