No the system would be Same as this year, board marks will not be calculated for deciding ranks.

No, they will not count for calculating the JEE Main Ranks. Since they were removed from 2017, its very unlikely for NTS (National Testing Scheme) to reverse the decisions after only a year.
For JEE Main and JEE Advanced, a minimum percentage is required to eligible for the exams.
If they scrap JEE Main for any other single entrance exam, anything can happen. They can also make JEE Main compulsory instead of all State CETs, and keep the current pattern. JEE Advanced will continue in any case.

No, no such changes are going to be considered next year for the calculation of JEE results. Atleast there is no news yet. 

Be positive:)

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