Combination of Three (三位一体) set - April 22nd release, 2,100 Yen (inclusive of tax).
Shin Soldier Unit - April 15th release, 420 Yen (inclusive of tax).
Shin Kousonsan Ez8 - April 28th release, 630 Yen (inclusive of tax).
Shin Hakugin Ryuseiba (Horse Unit) - April 15th release, 315 Yen (inclusive of tax).
Combination of armors and custom painting.
Shin Sousou Gundam, Shin Sonken Gundam - April 15th release, 630 Yen each (inclusive of tax).
More images can be seen in this previous posting.
Images are from Nintendo World BBS and Medio! Online Shop: Shin Soldier Unit, Shin Hakugin Ryuseiba.