According to the JEE Main website, the release of admit card for the entrance examination has been delayed.
The latest update at the website states that the downloading of admit card for JEE Main 2015 will be available after a few days.
Admit cards for JEE Main 2015 were scheduled to be available at the website for download from Sunday, March 1, 2015. Details of test session and slot will be mentioned in the admit card.
NOTE: It is mandatory for all JEE Main 2015 test takes to carry the admit card to the examination center.
The JEE Main will be held by the CBSE on April 4, 2015 and on April 10, and April 11, 2015.