At this point in time it is still 60 days visa exempt on entry and you can extend that for another 30 days at your local immigration office for 1,900 baht. There is talk in regards to reverting back to 30 days visa exempt, but only talk at the moment. There is no 60 day extension available for visa exempt only 30 days.
It would be helpful to mention what visa you arrived in Thailand on? You mentioned your first report, are you eluding to the 90 day report? In future just try and give as much detail as possible that way you will get some sensible answers to your questions.
You will be required to report to immigration whenever you spend 90 consecutive days in Thailand, say if you never leave Thailand for 10 years you will need to report every 90 days just because you are on a Non O visa based on marriage to a Thai National you are not exempt from reporting.
Impossible to answer that in January, you will have to check that closer to your travel date, but at this stage there hasn’t been any date fixed for the implementation of the ETA.