The way his sword was mounted on the backpack is almost identical to X Gundam's Satellite Cannon, which is the design reference for Sohi. ^^
June release, 630 Yen (inclusive of tax).
Images from Amazon Japan.
On the other hand, today is the biggest batch of new Gunpla release for this month, featuring MG Gouf Ver. 2.0, BB Senshi Sangokuden Sonshoko Gerbera and Joko Serpent. All on my to-buy list actually.
But I don't have time to be marveling at their content and manual right now T__T
You can find all of them to be available now on Hobby Search.
The next round of new Gunpla release will be one week from now (May 28th), featuring
* 1/100 Astray Gold Frame - 4,200 Yen Yen (inclusive of tax).
* Keroro Gunsou Plamo Collection Musha Viper Robo - 840 Yen (inclusive of tax).
