In an act of cultural assertion, different adivasi peoples in India, are devising their own scripts. Many adivasi communities find the roman script too inadequate to spell out the specialized pronunciations in different adivasi languages. Thus the need of separate scripts for languages is felt strongly. Many educated individuals from various communities have come forward to devise scripts specialized for their own native languages.
A piece of news regarding the same – http://www.allindiaaseca.org/MEDIA/2015/TOI8.6.15.html
A website detailing many new adivasi language scripts devised – http://www.omniglot.com/writing/kotia.htm