Sorry non-Japanese 360 owners I can confirm that Radirgy Noa Massive is not going to be region free from the latest preorder update on NCSX:
There's some really interesting info on the conversion and sales figures for the Wii version!!
"NCS Product Synopsis
Update: August 10, 2010
«©NCSX» Sales for the Wii conversion of Radirgy NOAH were tepid. Maybe the elite shmup corps overseas didn't feel like playing a shooter with an input device called a "Nunchuk" or a "Remote." In a couple of months, Radirgy NOAH is getting ported over to the Japanese Xbox 360 which should prove to be more favorable for Milestone's sales. In the confines of NCS' offices, we consider the X360 to be the spiritual successor of the Dreamcast... at least in terms of coin-op to console shooter conversions.
Radirgy NOAH is a vertical shooter where a squat ship displays its versatility by shooting at flitting enemies, shielding itself from danger, and slashing at incoming attackers. By firing away and slashing during the course of the stages in Radirgy, the ship levels up both offensive functions for improved performance. "NOAH" features a simultaneous 2-player option and is viewed in the Yoko (horizontal) aspect which allows enough room for both gamers to maneuver and takes sides. The final boss "Ruki Mishima" from the first Radirgy is an optional player character in NOAH. Bosses in the game include a bald-headed homo sapien in yellow pants who performs a spin attack that launches fireballs and an aerial platform that disappears in a puff of clouds when destroyed.
Milestone is adding the word "Massive" to the Xbox 360 conversion of Radirgy NOAH but that impressive descriptor appears to only encompass new game modes in addition to the default arcade mode, an illustrations gallery which features unlockable artwork, and an online ranking mode. Preorders for the Japanese Xbox 360 import Radirgy NOAH Massive are welcome to ship on October 14, 2010 at JPY6800 or US$75.90 from NCS.
Questions and Answers
Q: What is this Radirgy Noir that I see on some sites?
A: The word "Noir" is a mis-transliteration of NOA or NOAH.
Q: Do ya'll prefer Radirgy or Radirgy NOAH?
A: Asteroids. Scratch that. Asteroids Deluxe.
Q: Is Radirgy NOAH Region-Free?
A: Nope. The earlier shooters that were RF appear to be outliers.
Q: How many copies of Radirgy NOAH did NCS sell on the Wii?
A: Exactly 173. We shipped the rest back to Tokyo at 35% trade.
Preorders for the Xbox 360 import Rajirugi Noah Massive are welcome to ship on October 14, 2010. Alternate spellings include Rajirugi Noa, Radirgy Noa, Radilgy Noa, Radio Allergy, and variations thereof.
Japanese Product Name: ﾗｼﾞﾙｷﾞﾉｱ Massive
Please note Japanese Xbox 360 games will not boot on USA or European Xbox 360 consoles due to the inherent region-lockout on Japanese X360 game discs."