According to Shinseido [Online retailer for music & visual entertainment], Rockman 10: Uchu Kara no Kyoui!! Original Soundtrack will be released in Japan on march, 23 for 2.500 yens.
Shinseido (http://www.shinseido.co.jp/cgi-bin/WebObjects/Catalog.woa/wa/detail?r=INTIR-016)
UPDATE: On Capcom's Rockman 10 website, the cover for the soundtrack has been posted, along with a small list of tracks. (http://www.capcom.co.jp/rockman/10/goods.html)
(http://www.rockmanpm.com/i/soundtracks/rock01.jpg) (http://www.rockmanpm.com/i/soundtracks/rock01.jpg)
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The soundtrack will have 46 tracks in it, and a 12 page full color booklet.
Here's a small part of the track list:
01 USUAL DAY
02 FUTURE WORLD
03 SUSPICION
04 GO TOGETHER
05 TITLE
06 MENU
07 STAGE SELECT
08 GAME START
09 KING OF BLADES ( BLADE MAN STAGE )
10 POLLUTED PUMP ( PUMP MAN STAGE )
11 DESERT COMMANDO ( COMMANDO MAN STAGE )
12 ABSOLUTE CHILL ( CHILL MAN STAGE )
13 CYBERSHEEP'S DREAM ( SHEEP MAN STAGE )
14 FIREBALL STRIKE ( STRIKE MAN STAGE )
15 NITRO SPIRIT ( NITRO MAN STAGE )
16 SOLAR INFERNO ( SOLAR MAN STAGE )
Not to mention there will be a bonus disc available in the e-Capcom Store called "Inti Bonus Disc Vol.1". (http://www.capcom.co.jp/ecap/rockman10_0005.html)
(http://www.rockmanpm.com/i/soundtracks/rock02.jpg) (http://www.rockmanpm.com/i/soundtracks/rock02.jpg)
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That disc will have a total of 13 tracks. In that disc, there will be a Arrange version of the Rockman 10 Title theme, a Chiptune Arrange of Nitro Man Stage theme and a Non-Stop Remix of the 8 Robot Master Stages from Rockman 9. The bonus disc will also be available sometime in March.
Source: Capcom Rockman 10 Website (http://www.capcom.co.jp/rockman/10/goods.html), VixyNyan
UPDATE #2: There's more information leaked by Game Watch Impress. (http://game.watch.impress.co.jp/docs/news/20100204_346844.html)
Most importantly, the 12 page Full Color Booklet that comes with the soundtrack. It will have Official Illustrations/Drawings, and also comments from different people, like Sound Producer Ippo Yamada, Producer Hironobu Takeshita and Designer Hayato Tsuru. Finally, there will be comments and illustrations from Rockman X Manga Artist Shigeto Ikehara.
Finally, here's a list of composers working on the project and their history.
Composers in charge of the music
Inti Sound Team -III, Triple I- ( Rockman 9 )
Manami Matsumae ( Rockman 1, Rockman 2 )
Yasuaki Fujita ( Rockman 3, Rockman 4 )
Minae Fujii ( Rockman 4 )
Mari Yamaguchi ( Rockman 5 )
Yuko Takehara ( Rockman 6, Rockman 7 )
Makoto Tomozawa ( Rockman 7 )
Shusaku Uchiyama ( Rockman 8 )
Akari Kaida ( Rockman & Forte )
Source: Game Watch Impress (http://game.watch.impress.co.jp/docs/news/20100204_346844.html), VixyNyan
UPDATE #3: As predicted a few days back, the link to the Official Soundtrack Website is now open. (http://www.inti.co.jp/cd/rockman10ost/index.htm)
All the details that Game Watch Impress announced a while ago are very accurate, and now you can see a hint to what the Full Color Booklet will look like. The website also explains in detail on how to get the "Inti Bonus Disc Vol.1" soundtrack.
Source: Rockman 10 Official Soundtrack Website (http://www.inti.co.jp/cd/rockman10ost/index.htm), VixyNyan (http://forum.rockmanpm.com/index.php?topic=3492.0;msg=204658)