Not sure what change this actually represents, or what the effects might be? The hours seem the same but something must be different as they're making a big deal out of it. There is mention of entertainment areas being limited to 9:00 PM to 2:00 AM.
Note that there have been proposals to outlaw public (outdoors) consumption.
Restriction of liquor sale time takes effect today
23 January 2015
Restricted alcoholic beverages sale times will take effect today throughout the country.
Alcohol beverages can now only be sold from 11.00 am – 2.00 pm and from 5.00 pm – 12.00 pm every day.
An announcement was made today by the Prime Minister’s Office on the 2015 law regulating alcohol sales which takes effect today.
At all other times, alcohol sales are strictly forbidden with the exception of at international airport terminals and legally registered entertainment venues which have laws that strictly govern the periods they can operate daily.
http://englishnews.thaipbs.or.th/res...s-effect-today