I believe the owners were impressed with the players offer. However, it is not exactly what they want, and they want to have a few things changed. The problem is if they come straight out and say "it was a good offer", then when they make their changes, the players will say "that's too much, you said the last offer was good". So in essence, the owners do need all the time they can get to word their guarded optimism, or whatever you'd like to call it, the appropriate way in terms of public relations. We all know that the players have just offered the best offer either side has given (in regards to negotiating), and therefore the owners can't simply announce that the offer was terrible, or anything like that. Even if the owners didn't like the offer, they have to come out and in some way make it seem like they're considering their options. I assume over the weekend we'll here "owners offer a luxury tax starting at $40,000,000 at $1.75 on the dollar", or other changes to players offers that they know the players will not accept, but will seem reasonable to the fans. This press conference will likely just give a few details on what happened, what was offered, and officially announce that talks are "back on" so to speak.
Like others have said, if anyone expected instant hockey, it's not going to happen. I'd say two weeks from now is the earliest that we'll here there has been a deal reached. Come to think of it, December 25th would be the best day to announce it.
Christmas Headlines: "Merry Christmas Hockey Fans"