Changes that NASCAR is planning for the 2019 season changes daily, but here is what is known for now:

Car manufacturers are planning changes to the models they will use. In the Monster Energy NASCAR Cup Series, Ford is changing from the Fusion to the Mustang. With all the success Ford had in 2018 with the Fusion, will the Mustang be as successful? In the Xfinity Series, Toyota is changing from the Camry to the Supra.

One of the biggest shocks coming out of NASCAR is the folding of the Furniture Row Racing organization. The lack of funding seemed to be the problem, but with the success they had with Martin Truex Jr., the move is shocking. 

Truex was the Cup Series Champion in 2017 and one of the final four in the 2018 Cup Series Championship Race. Truex and his crew chief Cole Pearn will join Joe Gibbs Racing in 2019, replacing Daniel Suarez in the No. 19 car. 

Joe Gibbs Racing was a very strong team in 2018, but with Truex joining Kyle Busch, Denny Hamlin and Erik Jones, the Gibbs organization will be one of the favorites to win it all in 2019. Suarez does not have a ride for the coming year.

A.J. Allmendinger is being dropped from the JTG Daugherty racing organization and is without a ride for 2019.

Matt DiBenetto is moving from GoFas Racing to the Leavine Family Racing Team in 2019. The Leavine organization is also making a manufacture change from Chevrolet to Toyota.

Daniel Hemric will drive full time for Richard Childress Racing, replacing Ryan Newman in the No. 31 car. 

Roush Fenway Racing is dropping Trevor Bayne from its roster. Bayne drove the No. 6 Ford in 2018 while splitting duties with Matt Kenseth. Ryan Newman will move from Richard Childress Racing to drive the No. 6 Ford.

Ryan Preece is moving up from the Xfinity Series to join JTG Daugherty Racing.

Kenseth, Kasey Kahne and Jamie McMurray are all retiring from Cup Racing. Elliott Sadler is retiring from the Xfinity Series.

Kurt Busch is leaving Stewart-Haas Racing. He is still unsigned for 2019, but is rumored to be going to Chip Ganassi Racing.

NASCAR will try to improve the on-track racing by adopting the Charlotte All-Star aero package for 2019. They seem to change the aero package race-to-race because of a lack of passing on the track. Drivers in the lead and in clean air seem to have a definite advantage. 

The rules for next year are too numerous to mention, but they too, seem to change race-to-race.