update: well, i was unsuccessful at getting the dealer to cover it under warranty. first of all, the service folks were a nice bunch. anyways, the guy did a pen test where he stick a pen thru where he thinks the point of impact is. it does look like it got hit... by a small peable! so i got a quote from dealer instead. here's for your future reference: dealer vs. aftermarket.
dealer: $1429. (oem glass was $1028. the rest are molding and labor)
safelite: $474. (safelite glass + molding + labor)
both oem and aftermarket glass have rain sensor.