You have heard it right. IIM Rohtak does not have the cap around anymore. You will have to apply separately for this college. It might cost about INR 2000 for the form. The college also does not have any sectional cutoffs either.
As far as salaries are concerned, the highest is INR 24 lakhs per annum and the average is INR 13.70 lakhs per annum. The average salary for the college has increased from INR 11.85 lakhs which was the case last year.