The latest news post by Bungie confirms July for the Early access Beta Test. No mention of it's duration but will be extremely welcomed news at E3. QUOTE..... Paragon How much time in advance will we know about the beta? Will it be like, the day before, or will we know, say, a week or two in advance? You’ll know well in advance. For starters, you might have heard that it will happen in July. You’ll discover more about exactly when it will be your turn to play in the Destiny Beta when we make announcements at E3. That’s a promise. The “when” will no longer be a mystery. Of course, we’ll keep the “where” and the “to what extent” closer to our vests.