Mirrodin is the newest upcoming expert-level expansion for Magic: The Gathering. It is the first set in the Mirrodin Block, which also includes the upcoming sets Darksteel and Fifth Dawn.
Prerelease Date: September 20-21, 2003.
Details will be posted later on this site and on Sideboard.com. Refer to the Sideboard Events Calendar for the dates of all major Magic events.
Release (Sale) Date: Friday, October 2, 2003.
Legal in Constructed Tournaments: Monday, October 20, 2003.
As announced by the DCI in July, this is part of new policy regarding legality date.
Set Size: 306 cards.
Randy Buehler explained this change in set size in an article here.
Border Color: Black.
Mirrodin will be the first black-bordered set to feature the new card face that debuted in Eighth Edition. The premium cards will also be black bordered.
Expansion Symbol: A stylized sword.
The sword itself is an actual card in the set.
R&D Code Name: Bacon.
R&D Design Team: Mark Rosewater (lead), Bill Rose, Brian Tinsman, Mike Elliott, and Tyler Bielman.
R&D Development Team: Randy Buehler (lead), Brian Schneider, Henry Stern, Elaine Chase, Brandon Bozzi, and Brian Tinsman.
We'll be posting more information and preview cards over the next three weeks, so stay tuned to MagicTheGathering.com.