Thank goodness for Twitter, and in particular, a Tweet from Insomniac Games:
<span class="entry-content">"lbp levells coming, r&c content done, coming soon hopefully, up next for mm, big pack, bigger than mgs even."</span></blockquote>
Ratchet & Clank in LittleBigPlanet? This could be monumental. We'll save the party until after the official announcement.