Release Notes can be found here.
Preemptible tasks that take more than 24 hours should not restart on a preemptible instance
We have encountered cases where a preemptible task takes longer than 24 hours and is therefore killed. However it is restarted again on a preemptible instance where it is killed. This process is repeated for the value of preemptible in the runtime section of the task WDL. We want to continue to use preemptible for this task, since 99% of the time with our input, the task will finish in less than 24 hours. Thanks.