Just select a Someday/Maybe item (the terminology changed) and add a Tickle Date. When the date is reached, the item re-appears on top of the list in the Process Thoughts screen with 'TICKLED ON ..." in the description.
Does the new functionality preserve the item information? Currently if I reprocess something to Not Actionable / Someday-Maybe and set a tickle date, everything seems to get erased other than notes and topic.
I used that one time to "push something off my plate" for a week; it came back missing a small ton of information. If that has been fixed, that's awesome.