It is in a highly elliptical ~70,000km x ~500km orbit so it wont be deorbiting within our life times.

Sadly Indian mars program died after this mission. There were 2 follow on missions planned in 2016 and 2018 neither of which ended up happening.

Technically incorrect. It lasted for 8 years in mars orbit yes but almost 9 years in space if you count from date of launch (November 25th 2013).