I pretty much think the selectors have already chosen the twelve for the first test match, despite what the performances this weekend are. Hayden, Jaques, Ponting, Hussey, Clarke, Symonds, Gilchrist, Lee, Clark, MacGill, Johnson & Tait.
I think the only thing that would change these selections is a triple century by a seasoned batsman or a haul of 8 or 9 by a seasoned bowler. Injuries would be the only other thing that would change the side for the first test match.
However, if any of the players under question do not perform against Sri Lanka, I think any player who is scoring big runs or taking big wickets will come into consideration for the test series against India.