Rnor inquiry

DEAR SIR

I HAVE BEEN NRI FOR MORE THAN 10 YEARS. I JUST RETURNED TO INDIA ON 19TH MARCH'2014 AND I HAVE PLAN TO GO BACK AGAIN AND STAY OVERSEAS.

I JUST LIKE TO KNOW, UNTILL WHEN I CAN ENJOY "RNOR" STATUS ?.......FURTHER DO I HAVE TO SUBMIT TAX RETURNS ?......AS I THINK, I WILL GO BACK AGAIN BEFORE EXPIRING MY RNOR STATUS.

PLEASE GUIDE ME.

THANKS/ PRAKASH