The Surprise of Haruhi Suzumiya website has announced that Haruhi will be appearing in 25 of the Kadokawa Group's magazines in May or June. The marketing push is to commemorate the release of The Surprise of Haruhi Suzumiya on May 25th. There will also be special contents including exclusive covers, goods, and presents (send-ins, contests). The 24 magazines which the site currently lists and their listed special Haruhi related contents are:

From Kadokawa Shoten:

#1 Newtype June Edition (On sale 5/10) - Haruhi news flash! "Haruhi racing" starts!

#2 Comptiq June Edition (On sale 5/10) - Includes Haruhi tumbler labels, Nagato pinup drawn by Lucky Star's Kagami Yoshimu. (Corrected from Comptiq site.)

#3 Monthly Asuka July Edition (On sale 5/24) - Haruhi will appear on cover, special article, present for readers

#4 Shonen Ace July Edition (On sale 5/26) - Includes Melancholy of Haruhi Suzumiya manga replacement cover and novel replacement cover

#5 Comp Ace July Edition (On sale 5/26) - Special project Haruhi scroll insert with tribute illustrations

#6 Kerokero Ace July Edition (On sale 5/26) - Haruhi x Doubutsu no Hiyashi collaboration manga included

#7 Gundam Ace (On sale 5/26) - Haruhi will appear on cover

#8 Hon no Tabibito June Edition (On sale 5/27) - Haruhi will appear on cover, mini feature

#9 Nyantype July Edition (On sale 5/30) - Includes booklet Haruhi Suzumiya full series guide (Tentative)

#10 Ciel July Edition (On sale 5/30) - Kyon and Izumi will appear on cover, Haruhi lip balm, reader present

#11 Young Ace July Edition (On sale 6/4) - Includes reversible Disappearance of Haruhi Suzumiya pencilboard

#12 Yaseijidai (On sale 6/11) - Signed book by Nagaru Tanigawa present

From Kadokawa Marketing:

#13 Weekly The Television #21 (On sale 5/18) - Noizi Ito drawn QUO Card reader present

#14 Hokkaido Walker (On sale 5/20) - Includes 4x Haruhi x Hokkaido Walker Locale Bookmarks, 4x Haruhi x Hokkaido Walker Word of Wisdom Postcards

#15 Tokyo Walker (On sale 5/24) - Includes 4x Haruhi x Tokyo Walker Locale Bookmarks, 4x Haruhi x Tokyo Walker Word of Wisdom Postcards

#16 Yokohama Walker (On sale 5/24) - Includes 4x Haruhi x Yokohama Walker Locale Bookmarks, 4x Haruhi x Yokohama Walker Word of Wisdom Postcards

#17 Tokai Walker (On sale 5/24) - Includes 4x Haruhi x Tokai Walker Locale Bookmarks, 4x Haruhi x Tokai Walker Wise Saying Postcards

#18 Kansai Walker (On sale 5/24) - Includes 4x Haruhi x Kansai Walker Locale Bookmarks, 4x Haruhi x Kansai Walker Word of Wisdom Postcards. Hijacked by Haruhi for "Find the SOS brigade hiding on a page"

#19 Fukuoka Walker (On sale 5/20) - Includes 4x Haruhi x Fukuoka Walker Locale Bookmarks, 4x Haruhi x Fukuoka Walker Word of Wisdom Postcards

From Ascii Media Works:

#20 Weekly Ascii #6/7 (On sale 5/24) - Haruhi x AKB Mayuyu joint cover

#21 Dengeki Hobby Magazine July edition (On sale 5/25) - Haruhi will appear on cover

From Enterbrain:

#22 Weekly Famitsu June 2nd Edition (On sale 5/19) - Special cover drawn by Noizi Ito, cover also included as a postcard

From Fujimi Shoubo:

#23 Dragon Magazine July Edition (On sale 5/20) - Special Haruhi feature

From Shin-Jinbutsuoraisha:

#24 Rekishi Dokuhon July Edition (On sale 5/24) - Haruhi will appear on cover

Announcement webpage

via Syu's Quiz Blog. Additional info from Comic Natalie.

Image ©Nagaru Tanigawa, Noizi Ito / SOS-dan ©Nagaru Tanigawa, Noizi Ito / Kadokawa Shoten