This question arises every year, and it hasn’t happened yet. There’s little reason to change the band attachment as it works so well, and what would they replace it with? I bought the SS link with my Series 0 Watch, and I’m now on Series 2 and alongside the sport loop it’s my favourite band.
I don't think it so much about changing the band port as it is how questionable this company makes changes to their product line given their mysterious nature. That's part of the reason why Apple is Apple, is because they make changes to their devices that not everybody agrees with Over the years with hardware features that worked perfectly before. It's just Apple has a very different way of doing things that ultimately feel will be a better method for the future, which others find subjective.