TDK inflates to BDXL, bringing 100GB writable Blu-ray discs in SeptemberWhy, it seems like only yesterday that 50GB was an awful lot of capacity. Now, not so much. BDXL discs are here to rescue your data, and TDK is the latest to roll out triple-decker discs with 100GB of capacity. As with the others, these discs will only work in BDXL-compatible readers and writers, meaning yet another early round of devices is in the process of being obsoleted. (Remember Profile 2.0?) These discs are set to ship in Japan in September, and sometime later will come the quadruple-decker BDXL discs with 128GB. We wonder, though: can a retail offering really be considered a "pack" if it only contains one disc?