I did find this, which explains the post-trial process:
Eligibility and Return to the NHL
The National Hockey League (NHL)
announced on September 11, 2025, that the players were eligible to return to play.
They are now unrestricted free agents,
and their contracts can be registered with the NHL starting October 15, 2025.
The players can begin conditioning
with teams on November 15 and play their first games starting December 1, 2025.