While HTC hasn't confirmed this, the manufacturer seems reluctant to even reveal which CPU is powering the HTC One S in its own back yard. On HTC's web site, all it says is that the phone has a dual-core processor. There has been speculation that a shortage of the S4 chip is to blame. For it's part, HTC says that the device will perform the same as the international model and will offer the same battery life (with the same 1650mAh cell) as the latter model even though the S4 processor has been touted for its improved power management.
If you live in Taiwan, the HTC One S will be in stores in a matter of days.