From Expressen:
The purpose of the newly taken pictures is from the King's side to show the strong solidarity that exists within the family and particularly the strong ties that exist between father and daughter and the grandfather and granddaughter ......
But it is good timing to publish them today when there is a fuss in the press about Carl Philip's and Sofia's interview.
I think it is not only good timing, but even strategic timing to show the king and the heirs to counterbalance the fuss about CPh and Sofia's interview. Incedentally I hope they will calm down now that they are engaged. Excessive attention on them would be good for the monarchy.
I would also welcome from time to time a picture of Estelle with her father. However on this one it is normal that Queen Silvia and Daniel do not appear.