This is a new version not an update. If you have purchased MayaStar in the past or received it as a gift from the Marketplace you are eligible to upgrade to MayaStar 6.0 for 50% off the current price of MayaStar 6.0.
To upgrade to MayaStar 6.0 rez the "Update Checker MayaStar" object that is in your MayaStar folder in your inventory on the ground. You will receive a MayaStar 5.2 box which will contain a gift card valuing 50% of the price. You must purchase your upgrade in world at my store. You can not upgrade from the Marketplace.