Quite a number of people have asked me about the 405th storyline and how they can be a part of it (and be considered canon). Anyone can join the 405th story, but there are a few guidelines.
Go to the forums page. On the Roleplay and Fanfiction topic, you will find the official 405th timeline and canon guidelines. Post your questions about the 405th canon there.
Also, even if you don't want to do anything 405th related, I still suggest checking out the Forums in general. Most future contests and events are planned out months ahead of time there and there are tons of interesting topics. It's definitely worth the read if you don't do so already.
Go to the forums page. On the Roleplay and Fanfiction topic, you will find the official 405th timeline and canon guidelines. Post your questions about the 405th canon there.
Also, even if you don't want to do anything 405th related, I still suggest checking out the Forums in general. Most future contests and events are planned out months ahead of time there and there are tons of interesting topics. It's definitely worth the read if you don't do so already.