Edit: Viz put a longer, subbed, and somewhat higher quality trailer on their site and Hulu.

Behold, the first glimpse at the new series and its opening music.

You can view the trailer here. Please note that it may take a while to load.

Just got out of the Viz panel a little while ago and perhaps the only news worth talking about was the confirmation of a Final Act subtitled simulcast.

As you may already know, Viz, by virtue of their handling of the Final Act license, had made little or no attempt to conceal this plan. The early license and English logo were dead giveaways of their intent to simulcast.

At any rate, this is the first good news in a while aside from the OP and ED titles ('A future without you' and 'With you' respectively).

Edit: I forgot to mention that the simulcasted episodes with English subtitles will be put up on the http://shonensunday.com/anime website within 3 hours of airing in Japan.

The other day, Sunrise posted the first two episode titles on their website and at the same time may have pissed off quite a few manga fans.

1. Naraku's Heart (奈落の心臓)
2. Kagura's Wind (神楽の風)

I'm not in a spoiling mood today, but these titles do make me worry a bit about potential pacing. The main issue though is a question of where the anime will start and titles do seem to imply that there might be a jumping or breezing through a dozen or so chapters from where the first anime left off.

On an unrelated note, I'd like to confirm that the first episode will premiere on Sunday, October 4th at 2:20AM on Nippon TV.

Sources:
Sunrise
2ch

(Click on image for larger size.)

After a bit of a dry spell with information, we finally have something new to talk about.

Inuyasha Final Act will premiere on October 4th on Nihon TV at 2:20AM JST and on October 6th on Yomiuri TV at 1:44AM JST. The opening will be performed by Do As Infinity (they did the 2nd and 5th endings for the first anime and ending for the 4th movie) and the ending will be performed by AAA.

I had honestly thought that Do As Infinity was done after they broke up a few years ago. Even though I knew they came back last year, having them do another song for Inuyasha is a pleasant and quite appropriate surprise.

Source: 2ch

Edit: In other news and in case you haven't heard over the past few weeks, Anime-Kraze has confirmed that they will be fansubbing the series.