These will be implemented at the end of June. See the link below for the all changes in domestic indices.

SET50 reshuffle for 2H20.

• Adds: BPP and TTW
• Dels: BANPU and DELTA.
  

SET100 reshuffle for 2H20.

• Adds: AAV, ACE, DOHOME, RBF, SIRI, TVO, WHAUP
• Dels: BGC, DELTA, MBK, PSL, STPI, THAI, THG.

Source: SET