For what it's worth, we're still the 7th newest building after the Islanders, Kraken (technically the oldest building in the league but completely gutted and transformed), Red Wings, Golden Knight, Oilers and Pens.
Believe it or not, the arena in Philly (which wasn't even the arena I knew growing up, which was the Spectrum that stood across from it) is actually one of the the oldest arenas in the league now, other than MSG, which is by far the oldest and only one opened before the 80s and I'm pretty sure after the Saddledome is replaced MSG might be the only arena that opener before the 90s?
The Saddledome is older, but there's already plans to replace it. And from the early 90s through 96 when the Philly arena opened, there were several other arenas to open in that stuff. San Jose and Anaheim. And I'm pretty sure the Ottawa building was opened a few years after Ottawa became a team. That might be from the late 90s, along with the two Florida buildings, as the Panthers started out in Miami and the Lightning started out at Tropicana Field before they even had a baseball team there and it was the Thunderdome. Both teams got their own arenas in the late 90s. And Ottawa is only trying to replace theirs because it's int he middle of nowhere.
Remember the Nashville was already built several years before they got the Predators. That arena was already up and open (I think?) back when we were supposed to move there in 95.
I think Vancouver's arena is from the mid 90s also. I'm pretty sure Chicago and St. Louis are both from the mid 90s and replaced ANCIENT buildings. Same with Boston and Buffalo, as well as Toronto and Montreal.
So I don't think there's any chance we get a new arena until more of the 90s buildings start to get phased out and replaced, which I believe Philly is the only current one that doesn't have anything to do with the arena being 30 minutes away from the downtown. I wouldn't be shocked if the Panthers success leads to them getting a new building in downtown Fort Lauderdale within the next few years.
I think there's no chance we get a new building until you start seeing a couple of the 00s buildings that opened before us getting replaced.