GT4 cars will be allowed in the Asian Le Mans Series for the first time in the 2018-19 season while a separate class could also be created for GTE competitors.
The championship will therefore be open to LMP2, LMP3, GT3, GT300, GTE, GT Cup and GT4 cars.
An additional GTE class will be created if a minimum of four GTE cars are registered for the season, which kicks off at Shanghai in November.
LMP2, which remains for previous-generation machinery only, will be divided into Pro and Am categories, while a single LMP3 class will complete the prototype field.
The GT class, meanwhile, will be open to both GT3 and GT300 entries, in addition to the possible extra GTE category.
The GT Cup class is open to cars homologated for various single-make series and is reserved for Am drivers, while GT4 entries will also be allowed for the first time.
Last season saw separate classes for LMP2 and LMP3 and a three-car GT3 field in the GT class.
A single Porsche 911 GT3 Cup was entered in the GT Cup category for the final two rounds.
The four-race championship will take place between November and February with the previously-announced schedule that includes races at Shanghai, Fuji, Buriram and Sepang.
Four automatic invites to the 2019 24 Hours of Le Mans will be awarded, for the championship winners in the LMP2 Pro, LMP2 Am, LMP3 and GT classes.