Microsoft regularly updates DRM to provide new rights; for instance, provision for limited play or content expiry after a certain period… does the device support this?
The upgraded technology for these rights is so far available only on PC platforms. The ported technology for STMP341x is DRM-PD, which is used for portable devices, which is different. This does not support content expiry by any means. Microsoft is currently upgrading their DRM-PD technology for portable devices to provide additional rights.