All the problems will be partially graded and you will get score for passing certain test data (except tie-breaker problem). You will receive hundred (100) point for solving a problem (passing all test cases).
The details of the failed test cases will also be visible on your solution page (except challenge problem)
As you said, its too early to judge. I think partial point scheme would encourage more users to atleast read and code more problems. But, failed test cases SHOULD NOT be made visible. It would stop people from finding their own mistakes and would encourage petty hacks.
^well i think allowing some crappy brute force for 20 points for hardest problem just decrease its value relative to challenge problem.
And if someone put some outstanding effort to solve 8th problem (in terms of difficulty) then he can easily get lower rank than the one who put 20 point easy effort in 8th + 20 point easy effort in 9th + 61 point not so tough (most of the times) effort in challenge. Long contest is already unique and gaining lots of popularity, so i feel this change is not at all required.
I think partial marking is a good idea.It really encourages participants to really try out all problems and score partially if not fully.moreover, it helps a novice coder like me to understand complexities concept.