That trailer reminds me of RE4 a lot... which is a good thing. I'm a little worried about being completely overrun by enemies, but isn't that part of the horror? The game's not even out and I'm already getting tense!
Interestingly enough, neither Masami Ueda nor the team from RE4 (Misao Senbongi & Shusaku Uchiyama) are not going to be involved with sound design. This time around it's being handled by Tetsuya Shibata - whose survival horror credits include Biohazard Outbreak and DMC 2, 3 ad 4 - and Hideaki Utsumi, who composed for Demento. Some of the music from the trailer is reminiscent of Ganado V/VI from the RE4 OST, so it looks like they may keep the same style as RE4 instead of going back to the older RE style of music, which would be awesome.