Yeah, it's still very early. Get rid of that 15 more pounds, and then maintain that weight for another year and see what's happening.
Now, this doesn't mean that your fat cells have gone away. What it means is that they've shrunk. But they're still there. According to
one study, 10% of fat cells die off and are replaced every year. Over time -- a long time, actually -- new cells will get positioned in better places, hopefully, while old cells in the not-so-good places eventually die off.
But even that can be unpredictable. You can try slowly gaining some weight and see where it goes. If it goes right back to your belly, you might want to consider a Brazilian butt lift -- where they liposuction out the fat from the belly and flanks, purify it, and transfer it to the butt and hips. Most of those cells will survive and establish a new blood supply (if the underlying musculature can support it, so it's good to work out the glutes).