Various changes have occurred over the model years. Earlier models had an all-King panel and later this became largely Garmin, the Garmin G1000 glass cockpit is now standard. In 1995, the pilot's windshield became a glass assembly (earlier it had been acrylic glass with a heat strip overlay). In 1996, numerous switches were moved to an overhead console. In 1999, the Mirage gained the strengthened wing designed for the turboprop Meridian. PA-46-500TP Malibu Meridian In 1997, Piper announced its intention to market a turboprop-powered version of the Malibu, and flew a prototype the following year powered by a Pratt & Whitney Canada PT6A-42A of . Certification was achieved in September 2000 and deliveries began in November that year. Changes made to allow for turboprop power include larger wings and tail surfaces. In 2009, Piper began offering the Meridian with a three-screen version of the Garmin G1000 including the Garmin GFC 700 autopilot as a replacement for the Avidyne Entegra system. Piper added wing root filets to increase wing area and of fuel capacity, a larger tailplane and reinforced wing spar and landing gear to raise MTOW to then from 2003. For a trip, block fuel is at block speed, while its maximum cruise speed is . Piper M-Class Piper Aircraft no longer refers to their top-of-the-line aircraft with the names Malibu, Malibu Mirage or Malibu Meridian. The PA-46 line of aircraft, as of 2015, is now referred to as the Piper M-Class. The M350, M500 and the newest M600 make up the entire M-Class line. The models range in price from the M350 at $1.478 million, to $2.3 million for the M500, to the flagship M600 whose pricing starts at over $3.3 million. M350 The M350 is an updated version of the Mirage. The M350 is fitted with the same turbocharged Lycoming TIO-540-AE2A engine and Hartzell three-bladed propeller as the Mirage. Improvements over the Mirage are an Ametek digital fuel quantity system and an improved Garmin G1000 NXi flight system. The new Garmin system has envelope-protection and anti-hypoxia tools. It will initiate an emergency descent in the case that the pilot becomes incapacitated as a result of hypoxia. The M350 is capable of cruising at with a range of . The plane has a service ceiling of . No wind, standard day gross weight takeoff is achieved in and landing in . M500 The M500 is an updated version of