29/04/2010 : Article predicts London LEZ will increase Euro III DPF Retrofits
British magazine 'Commercial Motor' says that several operators are planning to equip Euro III vehicles with a particulate filter to enter London LEZ

16/04/2010 : Hong Kong proposes SCR Retrofit Trial
All Hong Kong pre-Euro and Euro I franchised buses have been installed with DOC and Euro II and III buses are retrofitted with DPF when feasible