Canon EOS 1D X Expected Availability Date, Additional Specs

Canon USA, Canon UK and Canon Inc have announced that the Canon EOS 1D X will be available in late April. Here is Canon USA's announcement:
 
Updated Availability for the EOS-1D X DSLR Camera and Accessories
 
We would like to inform you of an update to the expected availability of the EOS-1D X DSLR Camera and its optional accessories, the WFT-E6A Wireless File Transmitter and GP-E1 GPS Receiver. The camera and accessories are now anticipated to be available at the end of April 2012. We apologize for any inconvenience this delay may cause.
 
Additional Canon EOS 1D X Specs
 
Canon Inc has filled in some of the TBA specs:
 
Weight: approx. 1340 grams for body; approx. 1530 grams with CIPA Camera & Imaging Products Association standards
 
Possible Number of Shots (CIPA Camera & Imaging Products Association standards):
 
View Finder shooting at 73°F/23°C Approx. 1120 shots
View Finder shooting at 32°F/0°C Approx. 860 shots
Live View shooting at 73°F/23°C Approx. 290 shots
Live View shooting at 32°F/0°C Approx. 250 shots
 
Here are the official announcement pages:
 
Canon Inc.
Canon Inc. b
Canon UK (a more-verbose press release)
Canon USA
 
(thanks David & Kaz)