Samsung has long been a holdout of one of the biggest trends in smartphones today, which is the removal of the 3.5mm headphone jack. According to a rumor from Android Police though, the upcoming Galaxy Note10 might be the first to drop the legacy feature.
Interestingly, the report also says that the handset won't have any actual buttons, swapping them out for capacitive or pressure-sensitive buttons. We've seen this idea before from HTC in the U12+, and it did not go well. Presumably, Samsung can learn from HTC's failings.
It's beginning to seem like if you want to plug in your older headphones and you want a premium smartphone, your only option is going to be LG, which uses a 32-bit Hi-Fi Quad DAC, so it's not giving up on the idea anytime soon. Google and Motorola are using it on their mid-range devices as well.
Samsung usually announces its Galaxy Note series in August, so we won't have to wait too long to find out. It's labeled as a rumor on Android Police and it seems to be based on a single source, so you can still hang onto a little bit of hope.