What most IITs are saying is that the common national test (whose name keeps changing from meeting to meeting), should announce the results of the two tests by 30th April, without waiting for the 12th class marks. They may give an additional copy of the result which has all the scores in June, but they must give a result of just their own test by 30th April, and IITs will only consider this test result for screening. It is clear in the majority of IITs that board marks will only be an eligibility post facto, that is the students have to show a certain performance only at the time of admission in July (which is what we do right now).
The only change as far as board marks are concerned is that we are willing to increase the cutoff from 60% to slightly higher, and since there will be a hue and cry when we increase this cutoff, we are willing to consider this cutoff in terms of a normalized percentile.
However, there is a disagreement on 12th class marks.
The minority is not a minority of 1. Guwahaty is agreeing to using the Ramasami Committee formula as it is, that is without any JEE. So they are an extreme case.
Roorkee is agreeing for Ramasami Committee formula for screening, that is including 40% weight of board for screening. But they are suggesting JEE after that screening in July. Since this will delay the admission of all colleges in the entire country, they are suggesting that semester everywhere should start by 1st September. (They are saying that IIT Roorkee will start semester by 1st Sep., but it is obvious that it will have to be for all universities, all colleges, in the entire country, otherwise there will be too much chaos and shifting of students from one college to another, when IIT JEE results are out.)
We are not sure what the formal stance of IIT Madras is, but it is understood that they will agree to screening plus JEE without any weight of 12th class in either, if the eligibility based on board marks is increased substantially from 60% (and in terms of percentile).
Kharagpur's senate resolution is very confusing and people are trying to understand what they have said.
Delhi/Bombay/Kanpur are firm on ISEET as screening, JEE for ranking, and 12th class board for eligibility, and a small increase in eligibility condition in terms of percentile.