For your twisted net-browsing pleasure, I have gathered some newly launched anime sites. For starters, Ga-nime and Toei Animation have announced two new anime OAVs, as follows:
Eko Eko Azarak, which will be based on some horror manga serial by Shinichi Koga, will see the light of the day on January 30, 2007.
Tori no Uta has the same release date as the one mentioned above, and will be some new cool stuff designed and directed by Yoshitaka Amano, who also worked with Ga-nime before – see Fantascope ~tylostoma~.
Next off, we get the chance to take a look at the new AIKa R-16: Virgin Mission OAV series, and I can tell you that the first of the three episodes will give us the desired loli twists on March 23rd, featuring an entirely new cast (hopefully, more and more and even more imouto-chans) and story.
The guys at Starchild have let loose the official homepage for their upcoming Nagasarete Airantou.
Interested in Hitohira? Say no more and check out the website for yourself. This anime was formally announced in some issue of Comic High Magazine, and it is bound for release somewere next year.

Thus endeth the link invasion. You can also enjoy this little imouto-chan artwork.