Hm, I am confused. Reading the article at BangkokPost I read that the new rule applies to Thais - but I can not see that it is stated that it will apply to foreigners too. Am I wrong????
"...According to Panuwat Luengwilai, deputy director-general of the department, Thais with income earned abroad who remit it to Thailand regardless of the tax year must include that income in their personal income tax filing in Thailand. ...."