On June 5 Alstom Transport confirmed that Metro de Santiago had exercised its option to purchase 12 more three-car Metropolis trainsets, which will be delivered at the end of 2009. Total value of the deal is put at €47m.

The stainless-steel bodied cars will be built at the company's Lapa plant near São Paulo in Brazil, with electrical traction package coming from Villeurbanne, Tarbes and Ornans in France. The Saint-Ouen facility will provide the Urbalis automatic train control equipment, and the passenger information system will come from Montréal.

Bogies will be installed locally by Alstom Chile staff after the cars have been delivered to the metro workshops.

Alstom supplied an initial fleet of 60 three-car units for Lines 4 and 4A under a €250m contract awarded in September 2002; these were also built at Lapa. Taking power at 750 V DC, the trainsets are each formed of two driving motor cars and a centre trailer; they can operate as three or six-car trains.