No, not the issue people normally complain of -- that children in gifted programs are disproportionately Asian or white. In New York City, a different form of segregation, within gifted programs, seems to be taking place.
The New York Times has a long story about the TAG School in East Harlem. One of three city-wide schools for gifted elementary school students, the school is open to kids who score at roughly the 97th percentile or above. It is located in a predominantly Hispanic neighborhood which turns out to be a bit, well, scruffy. The other two city-wide gifted schools are located in much nicer areas. What this has all resulted in is that white parents have chosen to send their gifted young children to the other two schools. And, it seems from the articles, some black and Hispanic parents prefer to send their kids to TAG because they like its demographic make-up better.
In other words, the gifted programs are fairly segregated. Unfortunately, as part of being in a scruffy neighborhood, the TAG school is also not as nice as the other schools. Parents are banding together to do something about that, but the average income in TAG is lower than in the other gifted schools, which makes fundraising more difficult. And since it's located right beside other schools, there is always the issue of gifted kids getting "better" facilities than their neighbors.
It's a tough issue, defying easy answers, and gives an insight into some of the problems school districts still face when trying to serve diverse students. But we can at least be grateful that NYC is trying. Having three schools for gifted students, even if one is not in a great neighborhood, is much better than most cities do!