Here's Bandai's shipping schedule for the month of April. Note these are actually "expected in-store" dates, so actual shipping to your favorite retailer may be 2~3 days earlier than these dates.
April 15th ...
Boukenger GouGou Gattai GOUGOU MIXER
Boukenger GouGou Gattai GOUGOU CRANE
Chogokin GAMERA
April 22nd ...
MR Mugenbine WING BAT
KR Ryuki MIRROR MONSTERS 3
Saint Cloth Myth WOLF NACHI
Saint Cloth Myth LIONET BAN
April 28th ...
EMSiA FREEDOM GUNDAM
April 29th ...
KR Kabuto Cast Off Rider 3 DRAKE
Souchaku Henshin THE BEE
Souchaku Henshin KAMEN RIDER 1 (The First)
Souchaku Henshin KAMEN RIDER 2 (The First)
Ultraman Moebius GUNWINGER
Ultraman Moebius GUNLOADER
Gundam FIX GOD GUNDAM AND NOBEL
Equip & Prop 3 ZERO & SHIRUVA
Keybots Neo Core 5 GRANDREX
Rider Hero DRAKE MASKED FORM