Early morning Thai Immigration still stamped 30 days at Airport/Land borders. Afternoon around 16:00 news spread that PM signed order with immediate effect and Airport/Land borders started to stamp 60days.
This 60days visa exempt works like a Tourist visa, it can be extented and changed to another visa category inside Thailand.
Some members have pointed out that some countries appear on both list, this is possible as Thailand has not changed the respective agreements with the other country, example Russia is on VOA and on 30days Bilateral Agreement (increased to 60days up to 31st October) and now appear on this 60 days visa exempt.
Remark: the limit of two border run in a calendar year (1.1-31.12) still remain in effect, meaning if you used up your allowance already earlier this year you need to, either, fly in or get a visa or wait until next year to come in via Land border.