Halatau is with the Kiwis as they prepare for their clash with Australia this Saturday at Loftus Road, London.
The 21-year-old was originally named in the Kiwis train-on squad for the Tri-Series and has impressed coach Daniel Anderson and selectors with his work ethic.
Halatau joins Test centre Paul Whatuira in the New Zealand squad as the two representatives of the Wests Tigers.
Promising second-rower Bronson Harrison also was chosen in the Kiwis train-on squad but missed selection in the extended squad.
Wests Tigers Football Operations Manager Steve Lavers said touring Great Britain would be a great experience for Halatau.
Halatau played 22 games this season for the Wests Tigers, shifting from his preferred position at centre to the second-row.
�Dene had a very good season for the Wests Tigers and his selection in the Kiwis squad is a just reward for his efforts,�� Lavers said.
�Everyone at the Wests Tigers have their fingers crossed that Dene gets a game. We wish him well.��