It did exist, you got 90 days within a year each time you entered Thailand, -now you only get 90 days one time.
Non O-A is basically the same as the previous Non O. You get one year upon each entry within one year, -two years in total.
The main requirements are the same, -minimum 50 years of age and income/funds 65K/800K baht, but the Non O-A requires a mandatory health insurance/certificate and a police check up as well.
Both visas are based on retirement/50 years of age and passive income/funds and you’re not allowed to work or do any business on this basis for your stay.
Previously you could get a regular one year 90 days Non O visa with multiple entries which gave you up to 15 months in Thailand. As Graham states this is phased out in the new e-visa system and you only get a 90 days Non O visa with single entry and one year Non O-A visa with multiple entries.
Apply for a regular 90 days Non O Visa based on retirement without health insurance requirements online through your embassy before you leave and do yearly extensions of stay in Thailand.
Only the one year Non O-A visa requires a mandatory health insurance.
The best solution for you should probably be to applied for a six months multiple entries tourist visa at home before you left. This can only be applied for at your home country or country of legal permanent residence at date and gives you possibility for up to a nine months stay in Thailand.
If you want to apply for a ED visa you’ll need to contact and apply through an approved institution according to the program you’ll like to participate in.
You just hand over your passport and boarding card for a 60 days visa exemption and free stamp. Formally the requirements still are cash equal to 20K baht in cash only if you’re asked in the immigration.
No official statement regarding this. I guess everyone will know when and if it starts. It was supposed to be a pilot program only for Australians for the first six months from December first and possible for all after this period, but no one know anything clearly at this point.