We’ve been seeing assets for weeks from the closed beta for Phantasy Star Online 2 and today Sega has finally announced when the open beta will begin. The beta will go live on June 21st at 4PM JST. The game will be offline until that time in preparation for the beta, but you can still download the game from here. I should note that unless your Japanese reading skills are top notch, you might not want to bother.
Phantasy Star Online 2 will launch this Summer for PC and PS Vita as a free-to-play MMO supported with premium features and microtransactions. A North American release for the game is still not confirmed.