I think it's time again:

LACA-9246~7 | TARI TARI Music Album ~Utattari, Kanadetari~ (Shiro Hamaguchi scores latest anime by P.A. works)
PCCA-03648 | Luxendarc Daikikou / Linked Horizon (more Linked Horizon songs for Bravely Default)
FVCG-1209 | Sekaiju no MeiQ⁴ *denshou no kyoshin* Super Arrange Version (MeiQ4 arrange album, has Hamauzu und Shimotsuki)
WAYO-002 | Of Orcs and Men Original Game Soundtrack (score by Olivier Deriviere who also did Alone in the Dark)
UMCK-1414 | Tenchi Meisatsu Original Soundtrack (a new Joe Hisaishi soundtrack)
LACA-15226 | Jinrui wa Suitai Shimashita Original Soundtrack (new anime score by Kow Otani)
TOCT-29068 | ASURA ORIGINAL SOUND TRACK (dunno, but somehow this look interesting)
KAXA-5004CD | Hyouka Vol.4 Special CD (fourth enclosure album for Hyouka, score by Kouhei Tanaka)
ZMXZ-7874 | Dusk maiden of Amnesia Soundtrack 2 (second enclosure album for Dusk maiden of Amnesia, scored by MONACA)

Also Austin Wintory's Journey might get a physical release this month (EDIT2: Doesn't look like it, the release shifted even further to the end of the year.). And there's this extended Soul Hackers reprint album.

Apart from that there's not much else which could interest me. But please chime in and extend the list!

EDIT: I've only preordered TARI TARI. Everything else will depend on how the albums turn out.

Other things of note i'm either getting or interested in hearing:

Final Fantasy XIV Eorzean Frontiers
KINGDOM HEARTS 10th Anniversary FAN SELECTION -Melodies & Memories-
Final Fantasy VII Chips
Final Fantasy VIII Chips
Final Fantasy IX Chips
Final Fantasy X Chips
Subarashiki Kono Sekai - Crossover -
Space Brothers OST 1
The Collected Ys MUSIC of Ancient and Modern Times
Luxendarc Daikikou/Linked Horizon (Limited Edition)
Rock-can Sound E-can (Rockman 25th Anniversary)

The more I listen to FF XIV Eorzean Frontiers the more I like it.  Of course can't wait for the Chips albums.

Tenchi Meisatsu preordered (obviously...)
All the new Chips albums.
Rock-can

No point buying the KH 10th anniversary, it's just a fan selection album with nothing new and doesn't really give me anything the box set doesn't...  Subarashiki kono sekai music was f---ing awful, I won't be buying anything related to that series ever again.

A few other notable releases though I won't be getting any of these myself:

Double Dragon Neon OST  (Jake Kaufman)
Borderlands 2 OST
Phantasy Star Portable 2 Infinity OST
Rom Cassette Disc In Namco Bandai MegaDrive Compilation Vol. 2  (Phelios, Splatterhouse Pt 3, etc.)
Monster Hunter 2004-2012 Hunt
Monster Hunter 2004-2012 Life

As far as previously mentioned releases for September go, Etrian Odyssey 4 Super Arrange Version and Final Fantasy VII Chips (and possibly FFVIII and FFIX) are the only ones I see myself potentially buying.

You can DL Double Dragon Neon for free http://virt.bandcamp.com/album/double-dragon-neon

Listened to the MeiQ4 arrange and found it incredibly boring. Even Hamauzu's track felt lackluster. The vocalized arranges were interesting, but not enough for me to warrant a purchase. Oh well, at least the soundtrack itself is great

I'm listening to the OST now and it's really terrific. Blows the first three away (which weren't bad in themselves). Haven't heard the arrange yet...

I don't purchase many soundtracks these days, but I will be getting the 4 CD release of Guild Wars 2. I've never played Guild Wars and don't plan to, however the music is great! Jeremy Soule at his best! Sure, just like anything it's not for everyone, but I highly recommend it to those that enjoy this type of RPG music (I would call it epic, but more scenic than in-your-face loud).

I love that album. It hasn't totally sunk in with me yet, but unlike Skyrim (which took some warming up), I enjoyed most of what I heard the first time through. Totally worth the $30!