'Transformers 4' Has Its New Leads

Nicola Peltz
The new lead roles have been cast for Transformers 4.  Enter Brenton Thwaites and Nicola Peltz.  The two will star alongside Mark Wahlberg in Michael Bay produced sequel.
After breaking word that Mark Wahlberg would take the lead in Michael Bay's upcoming Transformers 4, Twitch has learned that after a lengthy screen testing process Brenton Thwaites and Nicola Peltz will be rounding out the principal cast alongside Wahlberg.

The American born Peltz - best known for her role as Katara in The Last Airbender and soon to be seen in Bates Motel - will play Wahlberg's daughter in the film while the Australian Thwaites - soon to be seen opposite Angelina Jolie in Maleficent - will play Peltz's biker boyfriend. Also, there will be robots. In disguise.
Source: Twitch
Brenton Thwaites