I have been doing a little research on the new NHL TV contract, and have been told INHD will be broadcasting the HD games. OLN HD which will be premiering in September will only be a video on demand service.
Also, HDNET does not have any NHL games scheduled at this point and since they are in direct competition with INHD, they may not retain the rights to televise the NHL this year.
The NHL Network will be available to US Comcast subscribers who have the digital package.
On-line streaming may be a year away from going live but may become a reality a bit sooner.