There is no official confirmation from Toyota regarding the Avanza's launch in India, so it will be early to comment on this. Also, Toyota already selling Innova MPV in good numbers, so it is needless to launch another MPV in the same segment.
Toyota hasn't made any official announcement regarding the launch of Toyota Avanza in India. But globally, it supports timing chain not belt. For more information on the same, stay tuned to Cardekho.