- Halodeth
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- Exalted Legendary Member
Every single copy of Halo 3: ODST has an invitation to the Halo Reach beta.
When the beta will become avaliable (next year, you'll be able to access it by selecting "Intel" on Halo 3: ODST's main menu. It's similar how you access the Halo 3 beta from Crackdown.