I just purchased the Galaxy S10+ and am hoping to hear good news about it fitting and connecting ok. Thank you in advance!

Also have a new s10 but have not had time to try out.

Hi, thanks for the inquiry. We're hoping that you could get the best feedback from our valued DJI Forum members who use the Galaxy S10+. For a friendly reminder, the said mobile device hasn't been tested by our engineers and it was just released, therefore, we couldn't guarantee if it will work properly or if the behavior of the application will changes especially if there's an update. Thank you for understanding.

I can verify the S10e works without issue with my Spark and Controller.  Not sure if that helps, since you have the S10+, But at least it's in the same series?