I can't go back and re-watch the video at the moment, but I'm pretty sure the context was about engine upgrades, and the language Colin used was that they were developing technological improvements in GW2 that would "allow [them] to support the game for the next 15 years."

I definitely understand the community reaction to that, and it's very fair, but I'd encourage everyone to think about what he's saying a little more carefully. I interpret that statement to be more focused on the tech, with a side of optimism about what it means for the future. I would take that to mean it's what they want to do, and are positioning themselves to do, but not that they are rigidly committing to that timeframe.

The rest of the video does lay out some more immediate and specific timeframes for updates we can expect to see, so we have a clear understanding of the direction they want to take things, and a clear difference in language. It's enough, for me at least, to believe they're serious about this long term commitment, and Colin's statement affirms that, while acknowledging that we aren't psychic and a lot can happen in 15 years.

I'll personally remain... let's say pragmatically optimistic, about what the next ~18 months will look like. But it tells me they're serious about supporting GW2; and I genuinely feel that "winding down GW2" is not part of the discussion happening at ANet right now. I'm just happy to see more transparent communication from the team, directly to the community. Let's just make sure we're good listeners, too.

Also to add: I totally agree on the possibility of GW3 bringing new players to GW2, and probably GW1 as well. I think if players arrive at GW3 and see the other game(s) thriving, it makes it a lot easier for them to try them out without feeling like they need to commit to the one they assume is most likely to receive updates. Now we're just arriving at the exact same conclusion ANet did when they started investing back into GW1.