With the renewed interest in the DARK SUN line and a slow release schedule many folks seem to be looking for material. DRAGON, DUNGEON and POLYHEDRON published many articles that may be of use to current players. You might have next weekends game idea sitting right on your own shelf :)
Magazine articles
Dragon
Dragon #173, p10, The Monstrous Side of the Dark Sun World (September 1991)
Dragon #173, p19, A Letter from the Wanderer (September 1991)
Dragon #173, p24, Random Magic for Organized Minds (September 1991)
Dragon #173, p67, A Little Knowledge (September 1991)
Dragon #174, p50, Novel Ideas (October 1991)
Dragon #177, p52, Sage Advice (January 1992)
Dragon #178, p92, Sage Advice (February 1992)
Dragon #182, p29, Sage Advice (June 1992)
Dragon #184, p88, Novel Ideas (August 1992)
Dragon #185, p10, The Arena Master's Arsenal (September 1992)
Dragon #185, p18, Mastered, Yet Untamed (September 1992)
Dragon #185, p64, Role-playing Reviews (September 1992)
Dragon #185, p76, Sage Advice (September 1992)
Dragon #188, p92, Sage Advice (December 1992)
Dragon #189, p98, Sage Advice (January 1993)
Dragon #190, p72, Novel Ideas (February 1993)
Dragon #191, p78, Sage Advice (March 1993)
Dragon #192, p76, Sage Advice (April 1993)
Dragon #194, p71, Dark Sun Campaign Journal: Slave Hunters and Silt Sailors (June 1993)
Dragon #194, p53, Sage Advice (June 1993)
Dragon #197, p84, Beyond the Dark Horizon (September 1993)
Dragon #197, p90, Ashes to Ashes (September 1993)
Dragon #201, p44, Sage Advice (January 1994)
Dragon #202, p42, The Preserver's Choice (February 1994)
Dragon #202, p67, Sage Advice (February 1994)
Dragon #203, p79, Sage Advice (March 1994)
Dragon #205, p59, Eye of the Monitor (May 1994)
Dragon #205, p71, Sage Advice (May 1994)
Dragon #206, p88, Sage Advice (June 1994)
Dragon #208, p107, Sage Advice (August 1994)
Dragon #209, p66, 1,001 Faces of Undeath (September 1994)
Dragon #210, p48, Dark Sun Campaign Journal: Adventure Seeds for Athas (October 1994)
Dragon #216, p96, Novel Ideas (April 1995)
Dragon #220, p98, Hunt's Ends
Dragon #220, p114, The Game Wizards: A New Age Dawns for the Dark Sun Campaign (August 1995)
Dragon #221, p87, The Ecology of the Crystal Spider (September 1995)
Dragon #226, p89, Sage Advice (February 1996)
Dragon #231, p40, Defilers and Preservers (July 1996)
Dragon #234, p40, Artifacts of Athas (October 1996)
Dragon #236, p18, Elemental Summoning Gone Wild (December 1996)
Dragon Annual #1, p93, Heroes of Athas (December 1996)
Dragon #237, p23, On a Waterless Sea (January 1997)
Dragon Annual #2, p22, Campaign Classics: Mindscapes of Athas and Beyond (December 1997)
Dragon #244, p76, Bazaar of the Bizarre: Miracles of Flight (February 1998)
Dragon #245, p70, Bazaar of the Bizarre: Dwarven Relics (March 1998)
Dragon #255, p88, Bazaar of the Bizarre: Life-Shapes of Athas (January 1999)
Dragon #258, p42, Wizard Societies
Dragon #315, p32, Defilers of Athas (January 2004)
Dragon #319, p18, Dark Sun Setting & Races (May 2004)
Dragon #319, p32, Dark Sun Classes: Heroes of a Dying World (May 2004)
Dragon #319, p38, Dark Sun Equipment and Rules: Tempered by a Burning World (May 2004)
Dragon #339, p22, Dragon Kings (January 2006)
Dragon #351, p32, Athas and the World Serpent Inn (January 2007)
Dragon #364, p66, Campaign Classics: Hazards of Dark Sun (June 2008)
Dragon #387, p72, Ampersand (May 2010)
Dragon #388, p58, Design & Development: Returning to Athas, Part 1 (June 2010)
Dragon #389, p11, Fiction: Blood Oasis (July 2010)
Dragon #389, p86, Design & Development: Returning to Athas, Part 2 (July 2010)
Dragon #390, p5, Dark Sun: Playing Templars (August 2010)
Dragon #390, p16, Dark Sun: Slave Theme (August 2010)
Dragon #390, p94, Design & Development: Psionics, Magic, and Metal (August 2010)
Dragon #391, p5, Monster Hunters of Athas (September 2010)
Dragon #391, p55, Winning Races: Muls Beyond the Desert (September 2010)
Dragon #391, Traveling the Sandswept Roads (September 2010)
Dragon #393, Dark Sun Grandmaster Training (November 2010)
Dungeon
Dungeon #35, p26, The Year of Priest's Defiance (May 1992)
Dungeon #44, p36, Raiders of the Chanth (November 1993)
Dungeon #56, p38, Grave Circumstances (November 1995)
Dungeon #110/Polyhedron #169, p56, Last Stand at Outpost Three (May 2004)
Dungeon #179, p61, Eye on Dark Sun: Sunwarped Flats (June 2010)
Dungeon #180, p68, Eye on Dark Sun: The Dragon's Altar (July 2010)
Dungeon #181, p4, The Vault of Darom Madar (August 2010)
Dungeon #181, p70, Eye on Dark Sun: Mar Juk-Adan, Dune Trader (August 2010)
Dungeon #182, p62, Eye on Dark Sun: The Broken Builders (September 2010)
Dungeon #183, p4, Revenge of the Marauders (October 2010)
Dungeon #183, p53, Eye on Dark Sun: Magma Elementals (October 2010)
Dungeon #183, October Adventure Hooks: Doing Your Groundwork (October 2010)
Dungeon #184, Eye on Dark Sun: Silt Elementals (November 2010)
Polyhedron
Polyhedron #59, p16, A New World to Conquer (May 1991)
Polyhedron #63, p2, Bookwyrms (September 1991)
Polyhedron #74, p2, Geran (August 1992)
Polyhedron #75, p20, Thri-kreen: Language of the Mantis Warriors (September 1992)
Polyhedron #79, p3, Take a Byte (January 1993)
Polyhedron #80, p2, Take a Byte (February 1993)
Polyhedron #80, p9, Guarded Wagon (February 1993)
Polyhedron #80, p15, Dark Sun Player Characters (February 1993)
Polyhedron #80, p19, Dark Sun World Monsters (February 1993)
Polyhedron #86, p31, Take a Byte (August 1993)
Polyhedron #87, p26, Bartering Made Easy (September 1993)
Polyhedron #99, p5, Coin Collecting Under Athas's Hot Sun (September 1994)
Polyhedron #99, p8, New Gladiator Weapons (September 1994)
Polyhedron #99, p12, The Enemy of My Enemy (September 1994)
Polyhedron #99, p19, Templars of the Tyr Region (September 1994)
Polyhedron #100, p20, Kre'ketrac (October 1994)
Polyhedron #134, p13, Intrigue in Raam (January 1999)
Dungeon #110/Polyhedron #169, p58, The Dark Sun DM's Guide (May 2004)
Dungeon #110/Polyhedron #169, p82, Dark Sun Monsters, Part One (May 2004)
Dungeon #111/Polyhedron #170, p88, Dark Sun Monsters, Part Two (June 2004)
(EDIT: Never let me blog before that first cup of coffee is finished :)
I missed some things:
Dragon #364, p66, Campaign Classics: Hazards of Dark Sun (June 2008)
Dragon #388, p58, Design & Development: Dark Sun (June 2010)
Dragon #389, p11, Fiction: Blood Oasis (July 2010)
Dragon #389, p86, Design & Development: Dark Sun (July 2010)
Dragon #390, p5, Dark Sun: Playing Templars (August 2010)
Dragon #390, p16, Dark Sun: Slave Theme (August 2010)
Dragon #390, p94, Design & Development: Dark Sun (August 2010)
Dungeon #179, p61, Eye on Dark Sun (June 2010)
Dungeon #180, p68, Eye on Dark Sun (July 2010)
Dungeon #181, p4, The Vault of Darom Madar (August 2010)
Dungeon #181, p70, Eye on Dark Sun (August 2010)
And regarding comics, IDW's Dungeons & Dragons #0 (August 2010) includes a short Dark Sun comic which is basically the prequel for next year's series.
and the link to the thread at Enworld that yielded this bounty:
http://www.enworld.org/forum/general-rpg-discussion/292291-dark-sun-collectors-guide.html#post5308631
where there is a TON of material...apologies to the original compiler of this material )
If I missed something please add it in comments and I hope this gives your session a boost. Now if we can just get WotC to speed up those releases. :)