Not only is the Mega Man X3 Max Armor kit now available to pre-order globally from Big Bad Toystore, but it looks like the Hyper Armor kit has escaped the confines of being a "Kotobukiya Japan Store" exclusive, too. The armor, in all its golden glory, is available to pre-order from Big Bad Toystore too. Grab 'em here:
Mega Man X Max Armor – $69.99 (January 2020)
The kit includes "a range of parts including the X-Buster, interchangeable hand and face parts and a Z Saber". BBTS' description says the Milight 316 (lithium-ion battery with an LED attached) for use with the Z-Saber will be included. However, this might be a mistake. Kotobukiya have gone on record to say it will be sold seperately. So unless something has changed for the US version... I don't know. I'll reach out to BBTS for comment.
Mega Man X Hyper Armor (Limited Edtion) – $69.99 (January 2020)
Includes X-Buster, Z-Saber, interchangeable hand and face parts, and an exclusive Cross Charge Shot effect part. No mention of Milight 316, though. I guess it might not be included with the Hyper Armor?
If you're new to building Mega Man Kotobukiya model kits, you'll be pleased to know that these come pre-painted. However, much like Gunpla and other kits, additional painting, paneling and other forms of customization are encouraged. Be sure to grab yourself some nippers, too. You're gonna need them!