The new HTC One lineup features two handsets with Snapdragon processors, which can cause delays. Notably, neither the carriers, nor the manufacturer are at fault. This time we have TSMC facing problems regarding the production of 28nm chips. The latter are used in making Snapdragon S4 chipsets. Thus, Qualcomm will not manage to make the chipsets for HTC in time.
“28nm Kraits are not shipping to end users, and as far as we have heard, nothing has been given a definitive ship date. If there is a 2-3 week delay, the OEMs and carriers will be peeved, but the end user will have no clue about any problem. It is internal, logistical, and annoying, but not a PR disaster.”
In all probability, the issue will be solved before the end of the month, so there is only a least chance you will have any of One series models in the beginning of April. The two devices using S4 are the HTC One X for AT&T and the HTC One S. In contrast to this, the international version of the HTC One X is using NVIDIA Tegra 3, therefore it will not suffer delays.
Among the two other victims of the situation we have the Panasonic ELUGA Power and the ASUS PadFone. Still this is a rumor, consequently the problem might not be that significant and might not affect the release date of the devices.