The Google-branded Nexus tablet has been in the rumor-mill for quite sometime. According to rumors, the Mountain View-based company is expected to ship its own branded tablet, with the help of Asus to manufacture it. Google has also been rumored to sell it through an online store, much like it did with the Nexus One. According to a new report this morning, Google is waiting to ship the new tablet in June, pushing it back from the rumored May launch. The wait is reportedly to lower costs from $249, which will put the tablet on a more competitive level.