UbiBlog has details on open beta testing of Rainbow Six Siege, saying this begins a week from today on November 25th, saying they will offer preloads a couple of days in advance. They also offer a new "Siege The Day" TV Spot featuring Idris Elba. Here's the outline of plans to test the tactical shooter:

Rainbow Six Siege is almost here, but before it launches, the developers want to give everyone one more chance to try it out. That’s why they will be running an Open Beta on all platforms from November 25 through November 29. This is your opportunity to hop in, play with the operators, check out a few of the maps and modes on offer, and help the developers run one last stress test before the game officially launches on December 1 on PC, PS4 and Xbox One.

Because of the Open Beta, all players will be able to pre-load the game on November 23, and those who participated in the Closed Beta in September will be able to jump into the Open Beta a day early (on November 24). During the Open Beta, you’ll have access to 14 operators (out of the 20 that will be available at launch), including 3 of the Russian Spetsnaz operators you may have seen during the Closed Beta – Glaz, Tachanka and Kapkan.

The Secure Area and Bomb PvP modes will be open during the beta, as well as the Disarm Bomb PvE Terrorist Hunt mode. Those of you who took part in the Closed Beta might already be familiar with two of the Open Beta’s available maps – Hereford and House – but this will be your first opportunity to check out the Kanal map seen in the Gamescom trailer. All three maps will be playable in both PvE and PvP, in either the day or night setting.