Then, anagata rupa is not ‘in the future’, contrary to conventional understanding. But it is a mental expression ‘towards the future’. I got it.
If I understand correctly, cittaja rupa is made of dhamma rupa(under the suddhāṭṭhaka stage). Atita rupakkhanda(namagotta) is the result of cittaja rupa. And paccuppanna, anagata rupakkhana is the contents of cittaja rupa. I would like to know more about the difference between cittaja rupa and rupakkhanda.