If i am in 2nd round then does that mean i get the email later or does that mean i try again next year.
Once all students who got first round offers, had their interviews and accepts or rejects their place, there might still be open spots and then they will do second round email/interview later this year, then if still open spots then third round until all the spots are filled ( for this year ) so yeah you might need to wait a while.
Once all the spots are filled then all the people who missed out will get an email to say you missed out, but that won't happen for a while as the process to fill all the spots might take a while, so until you get that email, there is still a chance, although smaller with each subsequent round.