According to Pride of Detroit user thePROD1GY, wide receiver Tim Toone posted on his Facebook page that he was released by the Lions.
The wide receiver position is pretty crowded, so this would come as no surprise, especially since the Lions may keep only four wideouts. Toone does have a great chance of making the practice squad, though. If the Lions do indeed keep only four receivers, then having one or two on the practice squad will be necessary, so I think Toone will be kept around despite being released.