Price drop on few HTC models - Wildfire S, CahCha, Salsa, Sensation

Recent announcement from HTC, they are dropping the price of it few models as below,
HTC Wildfire S@ RM 899 (RM 1,099)
HTC ChaCha @ RM 799 (RM 1,099)
HTC Salsa @ RM 999 (RM 1,499)
HTC Sensation @ RM 1,799 (RM 2,299)

This tell us, don't buy any HTC phones on launch date, and wait for the new device release, and they will drop the old device price.