If you preordered Destiny at Amazon, you likely received an email today that included some information about a release date. (marmot 1333 posted the relevant portion on our forum this morning.) Before you get too excited... you should double-check the actual page at Amazon - in includes this tidbit, as well:
So... yeah. Take that June 30 date for what it is - an acknowledgement that it will be out in 2014. Sometime.