Here is the list, please take it as a rumor since I have not seen the actual email. Add salt.
via Mikhaila
From an email from GW. Dates are when these items will be back in stock at GW mailorder in the US.
25-Apr-11
99060101451 Astorath the Grim
99110102134 Chaos Space Marine Havocs
99110102083 Chaos Space Marines Plague Marines
99110102073 Chaos Space Marines Thousand Sons
99060101327 Dark Angels Company Master
99110112059 Dark Eldar Incubi
99060206086 Deathmaster Snikch
99060104116 Eldar Harlequin Death Jester
99110104113 Eldar Harlequin Troupe
99060104124 Eldar Warlock with Two Handed Witch Blad
99060107057 Grey Knight Brother-Captain
99060107066 Jokaero Weaponsmith
99060112057 Lelith Hesperax
99110101299 Marneus Calgar and Honour Guard
99060110010 Necron Immortals
99060110021 Necron Tomb Spyder
99060103108 Ork Painboy
99060107067 Sisters of Battle Hospitaler
99110101312 Space Marine Techmarine & Servitors
99140113016 Tau Crisis Battlesuit Commander
99060113001 Tau Pathfinders
99140113005 Tau XV88 Broadside Battlesuit
99060108013 Battle Sisters
29-Apr-11
99060102118 Chaos Space Marine Obliterator 1
99060112056 Dark Eldar Archon
99119915022 Furies
99110209190 Gnarly Cave Squigs
99060209174 Goblin Boss with Great Axe
99060108074 Grey Knight Crusader 1
99060108082 Grey Knight Culexus Assassin 1
99060108071 Grey Knight Inquisitor with Power Sword
99060107062 Inquisitor Coteaz
99060101454 Lemartes, Guardian of the Lost
99110599153 Necromunda Scavvy Gang (8 models)
99110599005 Necromunda: House Van Saar Gang
99110103092 Ork Warlord Ghazghkull Thraka
99060101337 Space Marine Librarian with Axe and Plas
99060101338 Space Marine Librarian with Sword and Bo
99060101346 Space Marine Servitor set 1 with Multi-m
99060101330 Space Marine Terminator Librarian
99060101236 The Emperor's Champion
99060207123 Tomb Kings Tomb Herald
99060108082 Witch Hunters Culexus Assassin 1
99060101208 Wolf Lord Logan Grimnar
99110807020 Battlefleet Gothic: Rogue Trader Cruiser
13-May-11
99060101111 Space Marine Terminator Captain
99060101317 Black Templars High Marshal Helbrecht
20-May-11
99060102119 Chaos Space Marine Obliterator 2
99060108077 Daemonhunters Vindicare with Exitus Rifl
99060108079 Grey Knight Callidus Assassin 2
99060107007 Grey Knight Death Cult Assassins
99060107060 Grey Knight Inquisitor with Inferno Pist
99060108077 Grey Knight Vindicare Assassin with Exit
99061464040 Knight of Minas Tirith Standard
99060110022 Necron Lord and Resurrection Orb
99110101331 Space Marine Chapter Masters
99060108079 Witch Hunters Callidus Assassin 2
99110104108 Eldar Fire Dragon Aspect Warrior Squad
03-Jun-11
99140104089 Eldar Shining Spear Aspect Warriors
99110209109 Goblin Doom Diver
99060105222 Imperial Guard Techpriest Enginseer 1
99119915046 Kairos Fateweaver, Oracle of Tzeentch
99061464061 Rangers of the North
99060101315 Space Marine Chaplain in Terminator Armo
99060105222 Space Marine Servitor set 1 with Multi-m
99110101318 Black Templars Sword Brethren
03-Jun-11
99110112060 Dark Eldar Mandrakes
99119915032 Flamers of Tzeentch
60100181024 Gaunt's Ghosts: The Founding
99060209121 Grimgor Ironhide
99110108051 Inquisitor Karamazov
99110202211 Kurt Helborg
99060110017 Necron Wraith
99110103106 Ork Tankbustas
99060101252 Space Marine Chaplain with Jump Pack
99069915032 The Masque
