Both tablets support China's 4G TD-LTE standard and will be available today.
This, however, has not been reflected on Apple's China Web site, which shows only the HSDPA models.
SoftBank CEO says its use of and experience with TD-LTE, a variant of LTE, would dramatically improve Sprint's LTE efforts and give it a superior offering in the U.S. market.
A ZTE executive tells Reuters the company plans to sell TD-LTE handsets by year's end to address an expanding market.
According to China Mobile's chairman, Wang Jianzhou, a new 4G TD-LTE-compatible iPhone has already been discussed with Apple and is moving forward.
Clearwire is partnering with the world's largest carriers in developing products using TD-LTE technology.