No, they did not use the new EOS M2 :-)

Canon press release:

Canon’s Cinema EOS System contributes to video capture of comet ISON from space

TOKYO, Japan, December 2, 2013—Canon Inc. announced today that an ultra-high-sensitivity 4K camera was used to successfully capture video of the comet ISON from the International Space Station at approximately 7:08 p.m. JST on November 23, 2013. Canon technology contributed to this world’s-first achievement as video production equipment from Canon’s Cinema EOS System was used to record the astronomical phenomenon.

EOS C500 PL

CN-E15.5-47mm T2.8 L SP

CN-E30-105mm T2.8 L SP

Discovered in September 2012, ISON was unique in that, among the many large comets that have passed through the solar system in recent years, none had traveled so close to the sun. Accordingly, expectations were high that the “sungrazing” ISON would provide earthbound stargazers with a rare performance that would not likely be repeated anytime soon. After the video was shot, however, the comet is believed to have largely broken up and evaporated, meaning that it will no longer be visible in the night sky.

After the Canon C300 menu simulator, the Canon Digital Learning Center put a Canon C500 menu simulator online.

The Canon C500 has a price tag of $25,999 and can be purchased at the following shops: Canon C500 at B&H and Adorama. To much money? You can always rent the Canon C500 at Borrow Lenses.

Canon press release:

Canon U.S.A. has launched the Cinema EOS C500 4K Digital Cinema Camera Menu Simulator. Developed by the Canon Digital Learning Center (CDLC), the EOS C500 Menu Simulator is a fully interactive platform that allows users to familiarize themselves with the camera’s Main Menu and Custom Picture Menu.

With this innovative training tool, prospective users of the EOS C500 can navigate the simulated menu system with a mouse, keyboard arrow keys or their fingers (when using a touch screen device). Ideal for cinematographers, camera operators, camera assistants, producers, and directors, the Menu Simulator provides a platform to research camera behavior and features.

For added convenience, the EOS C500 Menu Simulator has been optimized for use on personal computers and tablet devices so it can be used at home, on set, or on-the-go.

To access this simulator feature please visit: www.learn.usa.canon.com/resources/articles/Simulators/c500.shtml

[via TDP]

Update: Philip Bloom’s thoughts about the C100.

Today Canon officially announced two new cinema EOS cameras. C500 and C100. The C100 should be around $8000. Pre-order options are available for those interested in:

• C500 – B&H (click here)
• C100 – B&H (click here)

Canon Adds Two New Cameras To The Cinema EOS System: The EOS C500 4K Digital Cinema Camera And The EOS C100 Digital Video Camera

Two New Camera Models Fill Out a Well-Rounded Cinema EOS Line-up with High-End 4K and Entry-Level HD Camera Solutions

LAKE SUCCESS, N.Y., August 29, 2012 – Canon U.S.A., Inc., a leader in digital imaging solutions, continues its commitment to the advancement of tools for visual expression and expand its contribution to cinematic culture with the introduction of the new EOS C500 4K Digital Cinema Camera* and the EOS C100 Digital Video Camera*. The C500 will take its place as the flagship camera model in Canon's Cinema EOS System while the C100 provides another option for beginning filmmakers working on a budget. The C500 is Canon's high-end professional 4K (4096 x 2160-pixel) cinema camera capable of originating uncompressed RAW output for external recording to meet the demands of premium cinematic productions and other top-quality production markets. The C100 digital video camera is a compact, affordable entry-level model delivering full 1920×1080 HD video and integrating the popular AVCHD codec for universal compatibility with laptop and desktop editing systems. The C500 will be available in both EF- and PL-mount versions; while the C100 will be offered in EF mount only and will be compatible with the more than 70 zoom and prime lenses in Canon's EF, EF-S and EF Cinema lens lineups. All products in the Canon Cinema EOS line are engineered to provide exceptional image creation capabilities for professionals in the motion picture, television, and other diverse high-resolution digital production industries.