There is a full and detailed report on the Aiya Burma Fund site (which though I have not seen corroborated elsewhere sounds accurate) which says that the 3,000 new refugees will not be housed in a new camp in an abandoned school but moved to Mae La (They fled Burma during the recent surge by the Myanmar and their DKBA surrogate forces when these troops torched their villages.) Mae La was already the largest camp on Thailand’s border. Following an ambush on the Moei River (which forms the border) which killed a DKBA commander Colonel San Pyone they write:
Attacks on civilians are anticipated in retribution for the DKBA commander’s death.
Because of the precarious security at Ti Nu Koh agencies responsible for critical infrastructure, food and clothing had asked the Thai Army to post armed guards around the old school should it be used as a temporary camp.
Thai security forces said they were undermanned, could not ensure security and recommended another site be considered.
All parties agreed to move the dislocated people into the massive Mae La refugee camp.
Anyone who wants to return home may do so, but Thai authorities will ask them to sign a form saying they have rejected refuge in Thailand of their own accord and have not been forced to leave.
This is to counter recent allegations of soldiers forcing those fleeing back across the border and to prove Thailand is willing to offer safe haven in a time of need.