Ritsu Miyako's Shinrei Tantei Yakumo is coming to an end in the March issue of Hakusensha's Bessatsu Hana to Yume.
A new manga titled Nana to Kaoru (ナナとカオル) from Ryuta Amazume, mangaka of Toshiue no Hito, began serialization in Hakusensha's Young Animal Arashi No.2, on sale 1/4. A preview of the title can be found on this page (click the lower right "Enter")
Heisei Democracy reports that the Queen's Blade series will be getting two manga adaptations, one in Kadokawa Shoten's Comp Ace (10/26) by Minasaki Iku, the other in MediaWorks' Dengeki Black Maoh (9/19) by Astroguy II.
A commercial for Honey and Clover creator Chica Umino's upcoming series, The Lion of March, can be found on Young Animal's website. The new manga will begin serialization in Young Animal issue 14, on sale 7/13.
Also available is a commercial for Kiminori Wagasugi's Detroit Metal City.
Source: Ultimatum Tidbits
According to Hana to Yume's official website, a new manga from Natsuki Takaya, creator of Fruits Basket, will debut in Hana to Yume issue 13, on sale June 5th. The new manga, titled Hoshi wa Utau (Stars Sing), will be a romance story. The texts beside the title reads: "The stray stars' one-sided love romance."