Textron Aviation unveils Cessna CJ4 Gen2 Textron Aviation today announced the next generation of the well-loved CJ4. It is called the CJ4 Gen2...not the CJ4+, which would have continued in vein as they were naming their incremental upgrades to current production models. The CJ4 Gen 2 is the largest offering in the Cessna light jet category. Most of the enhancements that can be seen with the CJ4 Gen2 is on the inside of the aircraft in the passenger cabin because passenger comfort and experience was paramount in these upgrades. On the outside though you will find a new stairs with a new handrail too.