Source: https://icv2.com/articles/news/view/42093/preview-magic-the-gathering-ravnica-allegiance

Wizards of the Coast has revealed artwork for the Magic:  The Gathering – Ravnica Allegiance products, releasing in January.

The releases for Ravnica Allegiance will include Booster Packs, Booster Bundles, Deck Builder’s Toolkits, Prerelease Packs, and Planeswalker Decks.

The Open House for Ravnica Allegiance is January 12, followed by a Prerelease on the 19th, the main release on January 25, and a Draft Weekend on the 26th and Magic League on the 28th.  In February, a Standard Showdown is scheduled for the 3rd, leading into the Ravnica Weekend event on February 16.

Key dates for the release are:

January 12:  Open House
January 19:  Prerelease
January 25:  Release day
January 26:  Draft Weekend
January 28:  Magic League
February 3:  Standard Showdown
February 16:  Ravnica Weekend