'I believe an NHL under a salary cap will benefit fans. In the short term there will be a number of exciting changes, the most likely of which seems to be an entry draft lottery. The NHL will try to crack down on obstruction but as always this effort will be short lived and halfway through the season the crack down will be over. I believe the only lasting changes will be a salary cap linked to league revenues, smaller goalie equipment, and a lowered eligibilty age for unrestricted free agents.'
Some rumored changes - the day after the CBA is signed
Source: SabresFans.com