The Magic Panel at the recent San Diego Comic Con revealed a few features of the coming big set in October, which was officially named ‘Return to Ravnica’. Here are the highlights of what they’ve discussed on the Magic Panel:

1. All ten guilds are returning in the Return to Ravnica block. Each guild will get a new keyword. No old guild keywords are coming back.

2. Return to Ravnica will be a large set coming out this fall. It will feature 5 guilds (Azorius, Rakdos, Selesnya, Izzet & Golgari).

3. Gatecrash is the name of the 2013 winter set. It too will be a large set with 5 guilds (Dimir, Gruul, Orzhov, Boros & Simic).

4. For RTR & GTC prereleases, you choose a guild. You will then get a guild prerelease pack – a box w/ 5 RTR packs & 1 guild booster.

5. Return to Ravnica will have 2 planeswalkers, one of which is Jace. Gatecrash will also have 2 planeswalkers, one of which is Gideon.

6. RTR & GTC will each have 5 guild leaders, two-color mythic rare legendary creatures.

7. Azorius: Isperia, sphinx Rakdos: Rakdos, demon Selesnya: Trostani, dryad triumvirate Izzet: Niv-Mizzet, dragon Golgari: Jarad, elf zombie.

8. Dimir – Lazav, shapeshifter Gruul – Borborygmos, cyclops Orzhov – Obzedat, ghost council Boros – Aurelia, angel Simic – Zegana, merfolk.

9. The guild booster only has cards playable by that guild. For example, the Izzet guild booster would only have blue, red and artifact cards.

Source: Mark Rosewater’s Twitter Account