Juicy news for you. There will be a lot going on about Karneval this spring.
Zero Sum* for the very first time in history
Karneval will be on the cover of Zero Sum (on the 3rd ZS issue which goes on sale on 28/01)
Volume 5*
Volume 5 will be published on 25/03/2010, i.e. on the same day as the FW-version Drama CD
Drama CD* in the ZS blog post the second Drama CD is entitled 『カーニヴァル 輪(サーカス)』 - "Karneval - Circus"
* if you decide to buy the FW-version Drama CD directly at Ichijinsha Online Shop, you'll get (?) a
Hirato bromide (don't ask me for details; I'm not sure if it's free or if you have to pay extra and if they will ship overseas)
* if you decide to buy the FW-version Drama CD directly at Animate Online Shop, you'll get (?) a
Gareki bromide * both bromides are a limited offer (i.e. no reprinting, when they're gone, they're gone)
* those who will purchase both the 5th volume and the FW-version Drama CD will get a special wallpaper for their phones and a voice message from Nai's, Gareki's and Yogi's seiyuu (this is probably for Japan residents only)
* apparently if you access the Karneval mobile phone site and answer correctly to some quizes about the future Drama CD booklet and Volume 5 jacket you can get a "splendid" present (I have no idea about this; I don't have the means to access that site <.<;;)
Other* Touya Mikanagi will have an autograph session on 04/04/2010; as usual, people attending (you have to buy a ticket) will get presents made especially for this occasion
* Mikanagi-sensei mentions in her blog that she's very busy with drawing many colour illustrations related to the upcoming release of the FW-version Drama CD
Sources:
ichijinsha.co.jp
kai-ku.com
animate.tv