Why on earth did you bump this? He's retired, there is no news. Dutch people reading the forum are getting heart attacks seeing this thread got bumped.
I don't know, just curiousity I guess. I wonder about a lot of riders who have retired, it's just natural. Contador, Valverde, Nibali, etc. A lot of them stay close to cycling still.
I did find some piece of news that someone is writing a book about him which will come out this month in March:
Wielerjournalist Roy Schriemer schrijft boek over Dumoulin: 'Tom heeft wielergeschiedenis geschreven'
Het is misschien wel een van de meest markante coureurs in de vaderlandse wielergeschiedenis: de vorig jaar gestopte Tom Dumoulin. Iemand die openlijk zijn twijfels over zichzelf durfde uit te spreken. Maar ook iemand die onmiskenbaar zijn plekje in de vaderlandse wielerhistorie heeft veroverd...
The book will be published in March. Dumoulin did not cooperate. “I’ve talked to Tom many times over the years. I have not experienced that as a great loss. But Tom just stopped. Now is the right time to look back. Together with Jan Janssen and Joop Zoetemelk, he is the only one who has ever won a Grand Tour. So he is really one of the biggest Dutch cyclists ever.”