Have a look at the Battlebots website. At present it says:

Season 2 Rules Coming Soon

Greetings Bot Builders. Season 2 is on and we couldn’t be more excited. Stay tuned to this site as we are currently in the process of creating the Season 2 rules, regulations and entry documents. These will be release as soon as possible. In the meantime, start thinking about and designing your next best bot. Feel free to email us at hello(at)battlebots.com and give us a sneak peak, tell us what you’re working on, and why you would be great for the show.

Also, be sure to sign up for our newsletter below and follow us on social media.

We look forward to your participation!
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I expect we will see the rules and entry documents within a week or so.