From the fantastic interview of Joe Blackburn, Zenimax Online Studios Gameplay Designer, in the latest
Tales of Tamriel Episode.
Aggelos:
"With regards to timed-content for leaderboards, do you have plans to move away or at least add a different type than timed content?"
Joe Blackburn -
"We are taking the opportunity in 1.6. There's a new scoring system for trials coming in [1.6] that is point based not time based."
The section about trials can be found
at the 42:29 marker and contains a few other tidbits.
No significant details but that is a significant change.