they did change some things in the new PTA that was signed at the end of last season but I know I read where they kept it at 4 years to sign but what I read was just for Sweden since all the PTA's are signed with each country but I had assumed it's the same for all them but Russia of course since they don't have a PTA with the NHL-IIHF.
I don't see why Nurmi would be 2 years instead of 4 as I'm not aware of being an overager changes anything.
I know they did make one change with Sweden that relates to when Norlinder came over. If you recall there was the whole they had to keep him in the NHL or send him back but then MB found a loop hole that after December they could keep him and send him down. The rule is that all non 1st round picks that are under contract in Sweden, that they have to be 24 years or older in order to be sent to the AHL. If not they have to be sent back to Sweden. This will only go into effect for players that signed after the new PTA was signed, players signed under the old PTA go off those rules.