There's no positive in the Monday diagnosis of Sidney Crosby having another concussion. The Penguins said it happened on Friday but coach Mike Sullivan didn't offer any further details of what the specific incident was that caused the trauma. Crosby reported not feeling well on Saturday morning, after completing a full practice on Friday and was held out of the final preseason game. Crosby was able to attend the Penguins fan fest on Sunday, appearing pretty normal before taking the concussion test today.
So while his timetable remains unknown pending the any future symptoms (ugh hate that sentence) the NHL season is still going to go on.