Thought this might be relevent considering mirror moon helped with the Utwarerumono translation.http://www.famitsu.com/news/201101/27039714.html
Leaf's homepage is advertising this development as well:http://aquaplus.jp/0127/
It seems that Leaf's working on a Utawarerumono 2. And while at it, a few others as well too (notably Tears to Tiara 2).
Considering how much of an enchancement TtT was over Uta in regards to gameplay (and that was around 5 years ago now), and looking at the PS3 version of TtT today, you wonder what the RPG system will be like in this sequel. That plus, what the new storyline will be. If memory serves correct TtT was just filled with meaningless eroge, and Uta too was rather 'forced' in that respect (though nothing pawns TtT yet in my books). If anything White Album 2 SEEMS to have resolved that issue, but then it's not technically based within a fantasy setting so...
All that aside, the teaser image seems to show a grown-up Aruru?
Image editor for the Fate/hollow ataraxia English Translation Project (mirrormoon is NOT translating)
DJMax Korea Veteran Elite Member (Top 350)