Well, now that Curt is being sued by Citizens Bank for the $2 million (and other costs) he borrowed as personal guarantor on behalf of his failed video game company, 38 Studios, he's probably due for some time to sort things out. ESPN does expect the Baseball Tonight analyst to return later this season, however.
Per ESPN's Mike Soltys on twitter:
We mutually agreed w/CurtSchilling to take a leave as he works thru his business issues. We expect he will return on air later this season.