As we reported a few weeks ago, Rainbow Six Siege is currently undergoing closed alpha and you can attempt to signup for that. The thing is that it is currently limited to PC. Looks like that will change but not until the current alpha is over, then everyone will have access to the Rainbow Six Siege Beta.
The Rainbow Six Siege Beta will not commence until sometime after the closed alpha but it will take place on all platforms that the game will be available on at launch. Ubisoft has even listed the reasoning for a separate beta and alpha as well as small FAQ on the official site regarding the closed beta. They also mention that a more comprehensive Rainbow Six Siege Beta FAQ will be available soon. You can sign up for the closed beta right now after a short survey. The only way to assure yourself a position in the closed beta is to pre-order the game. If you pre-ordered before the promotion your retailer will contact you before the closed beta goes live.
It is good to see Ubisoft working hard to deliver a polished online and working so hard to do so and being open to the public about it. Rainbow Six was always a fun online experience and the tactical element looks to stay intact. I personally can’t wait until the Rainbow Six Siege Beta.