Here are all the horror DVDs releasing May 2009. I'm sure some things will change during May however this will give you horror DVD nuts a heads up on what to save your dollars for.
Read more for the list . . .

Follow up:

May 5th

Attack of the Giant Leeches (2008)
Release date: 2009-05-05
Brain Damaged Films

Beast Collection
- Search for the Beast (1997)
- Legend of Bigfoot, The (1976)
- Shriek of the Mutilated (1974)
- Capture of Bigfoot ( Legend of Bigfoot, The ) (1979)
more…
Retromedia/Image Entertainment

Bone Snatcher, The (Steelbook) (2003)
Release date: 2009-05-05
First Look

Captive Factory Girls: The Violation (2005)
Release date: 2009-05-05
Cinema Epoch

Captive Factory Girls 2: The Revolt (2007)
Release date: 2009-05-05
Cinema Epoch

Frankenhood (2009)
Release date: 2009-05-05
Lionsgate

Mum & Dad (2008)
Release date: 2009-05-05
Revolver Entertainment

Scarce (2008)
Release date: 2009-05-05
Critical Mass Entertainment


May 12

Anatomist, The (1961)
Release date: 2009-05-12
Televista Films

B.T.K. (2008)
Release date: 2009-05-12
Lionsgate

Goth Kill - Satanic Special Edition (2009)
( GothKill…The Soul Collector )
Release date: 2009-05-12
Wild Eye Release

Grudge 3, The (2009)
Release date: 2009-05-12
Sony Entertainment

Plague Town (2008)
+ Scathed (Short) (1995)
Release date: 2009-05-12
Dark Sky Films

Possession (2009)
Release date: 2009-05-12
20th Century Fox

True Blood - The Complete 1st Season (2008)
- Strange Love (9/7/2008)
- First Taste, The (9/14/2008)
- Mine (9/21/2008)
- Escape from Dragon House (9/28/2008)
more…
Release date: 2009-05-12
HBO

Underworld: Rise of the Lycans (2009)
Release date: 2009-05-12
Sony


May 19th

Backwoods (2008)
Release date: 2009-05-19
RHI Entertainment

Bollywood Horror Collection, The - Volume 3
- Mahakaal ( Monster, The ) (1993)
- Tahkhana ( Dungeon, The ) (1986)
Release date: 2009-05-19
Mondo Macabro

Debauched Desires: Four Erotic Masterpieces by Masaru Konuma
- Erotic Diary of an Office Lady ( OL kanno nikki: Ah! Watashi no naka de ) (1977)
- Cloistered Nun: Runa’s Confession ( Shudojo Runa no kokuhaku ) (1976)
- Tattooed Flower Vase ( Kashin no irezumi: ureta tsubo ) (1976)
- Wife to Be Sacrificed ( Ikenie fujin ) (1974)
+ Sadistic and Masochistic (Documentary) (2000)
Release date: 2009-05-19
Kimstrem/Kino

Def by Temptation (1990)
Release date: 2009-05-19
Troma

Detective Story, The (2007)
( Tantei monogatari )
Release date: 2009-05-19
Tokyo Shock

Devil’s Ground, The (2008)
( Cycle, The )
Release date: 2009-05-19
Anchor Bay

Eden Log (2007)
Release date: 2009-05-19
Magnet Releasing

In the Sign of the Lion - Classic Danish Erotica (1976)
( I Løvens tegn )
Release date: 2009-05-19
Smirk

In the Sign of the Taurus - Classic Danish Erotica (1974)
( I Tyrens tegn )
Release date: 2009-05-19
Smirk

In the Sign of the Virgin - Classic Danish Erotica (1973)
( I Jomfruens tegn )
( Danish Pastries )
Release date: 2009-05-19
Smirk

Infected (2008)
Release date: 2009-05-19
Genius Products

Last Horror Film, The (1982)
( Fanatic )
Release date: 2009-05-19
Troma

Legend of Blood Castle, The (1973)
( Ceremonia sangrienta )
( Female Butcher, The )
Release date: 2009-05-19
Mya Communication

Mega Shark Versus Giant Octopus (2009)
( Mega Shark vs. Giant Octopus )
Release date: 2009-05-19
Asylum Entertainment

My Bloody Valentine 3-D - 2-Disc Special Edition (2009)
- 2-D version
- 3-D version
+ Digital Copy
Release date: 2009-05-19
Lionsgate

Nightmare Castle (1965)
( Amanti d’oltretomba, Gli )
( Faceless Monster, The )
( Night of the Doom )
Release date: 2009-05-19
Severin

Outlander (2008)
Release date: 2009-05-19
Weinsteins Products

Riot on 42nd St. (1987)
( Riot on 42nd Street )
Release date: 2009-05-19
Code Red

Sacred Flesh (2000)
Release date: 2009-05-19
Redemption

Skull & Bones (2007)
Release date: 2009-05-19
Ariztical

Wandering Ginza Butterfly (1971)
( Gincho wataridori )
( Wandering Silver Butterfly )
Release date: 2009-05-19
Synapse

Wandering Ginza Butterfly 2: She-Cat Gambler (1972)
( Gincho nagaremono mesuneko bakuchi )
( Wandering Ginza: She-Cat Gambler )
Release date: 2009-05-19
Synapse


May 26

Beneath the Flesh (2009)
Release date: 2009-05-26
Pathfinder Home Entertainment

Chinese Bungalow, The (1940)
Release date: 2009-05-26
Alpha Gotham

Devil’s Tomb, The (2009)
Release date: 2009-05-26
Sony Pictures

Exploitation Cinema Double Feature
- Devil Times Five ( People Toys ) ( Horrible House on the Hill, The ) (1974)
- Mark of the Witch (1970)
Release date: 2009-05-26
Deimos/Code Red

Exploitation Cinema Double Feature
- Forest, The ( Terror in the Forest ) (1983)
- Don’t Go In the Woods…Alone! - 25th Anniversary Edition (1982)
Release date: 2009-05-26
Deimos/Code Red

Rare Flix Triple Feature, Vol. 5
- Voodoo Dolls (1990)
- Madonna: A Case of Blood Ambition (1990)
- Centerfolds from Hell
Release date: 2009-05-26
Rare Flix

Source: Horroryearbook