In an interview last week with Boston NBC television affiliate WBTS, Perry, a bona fide guitar god as a founding member of Aerosmith, went off the charts when talking of the band’s plans for Las Vegas. Perry’s comment fits with tremors around the scene that Aerosmith has been enlisted for an extended engagement on the Strip. The Aerosmith residency, whatever its length, only reinforces The Park Theater’s already impressive lineup for 2018, with Bruno Mars closing New Year’s weekend at the venue.