In May (next month) we’ll finally be seeing an expansion pack for PixelJunk Monsters - the Tower Defense (TD) game for PS3. It includes the following updates –

• 1 new island, Toki Island
• 15 new levels
• 5 new music tracks from Otograph
• Ice Tower is now a stock item
• Reduced gem cost to buy the Tesla Tower

There is some Q&A on the PlayStation.Blog.