Lexus Australia is saying that the NX is first in line for Rear Cross Traffic Alert in Australia...
http://www.themotorreport.com.au/59636/lexus-to-add-more-safety-tech-rc-and-nx-first-in-lineThe NX SUV and RC coupe will be the first recipients when they launch later this year, while IS, GS, ES and LS models already equipped with blind sport monitoring will also receive RCTA by the end of 2014.