The official Haruhi website updated today (as is usual on the last week of the month) to put the Itsuki cover up, confirming that he will be on the limited edition. Since there's not a new limited edition to talk about, how about the trend of the Common Edition covers? I'll put them below:
Haruhi
Haruhi + Mikuru
Haruhi + Mikuru +Yuki
Haruhi + Mikuru + Yuki + Koizumi
Haruhi + Mikuru + Yuki + Koizumi + Tsuruya-san
Haruhi + Mikuru + Yuki + Koizumi + Tsuruya-san + Taniguchi
Haruhi + Mikuru + Yuki + Koizumi + Tsuruya-san + Taniguchi + Kunikida
Considering that the prior trend of the Common Editions was the big H and characters involved in those episodes, it's a drastic change. I expect Kyon to be on the final cover as the last to arrive.