On the  1) Former guitarist John Frusciante returns to give the band a hint of their former jammy-jammin' glory; and 2) Rolling Stone is wildly positive (four stars), if completely alone in its enthusiasm--They've written a whole album's worth of tunes that tickle the ear, romance the booty, swell the heart, moisten the tear ducts and dilate the third eye (Greg Tate).
John Frusciante is no longer a guitarist because he is dead.