Hello Aspirant,

No there are no any major changes in September session of JEE-Main other than difficulty level. Difficulty level might vary in shift to shift and therefore the percentile system has been adopted for result declaration so that any partiality can be avoided. Note that if you have appeared for both the sessions of JEE-Main then your best of the two results would be taken into consideration for final result which is expected to be released by the end of the day on September 11th which is today.

You can check out your result from the link given below using your Application number and Date of Birth :-

https://jeemain.nta.nic.in/webinfo/public/home.aspx

On the basis of that result you can predict the chances of your admission to different engineering colleges by using JEE-Main College Predictor :-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

I hope this information helps you.

Good Luck!!