I hadn't been paying close attention, but recently a few emails questioning the future of the jigsaw project have been sent to the jigsaw-dev mailing list. The last check-in posted to the mailing list was on June 8th, and was the tail-end of a flurry of check-ins from the jigsaw team.
The whole thing is rather curious, but without any specific word from Oracle, it's all speculation. I have my own guesses, but it's probably best I keep those to myself for now.
It appears that after a few months of inactivity, whatever decisions at Oracle needed to be made were made. Jigsaw appears to be under active public deveopment again.