News reaches us of a 512GB microSD memory card reportedly going on sale in July. Memory card maker Microdia is set to begin shipping the card within months at a cost of around $1,000 (£655), reports technology news site CNET. The Xtra Elite card will reportedly use version 4.0 of the SD standard, meaning there’s an additional row of pins to the ones found on standard cards, and feature data transfer rates of up to 300MBps – although the CNET report did…