The article I read basically stated that he would be nude twice, one being where Ron is tempted by images of HP and Hermoine, the other not described. It didn't go into any detail beyond that.
This thread seems to presume nakedness = sex = explicit = inappropriate,
You make these kind of presumptions a lot. You did this in another thread too. I didn't ever even imply that it was sexual or explicit, only that he is naked, and yes, it would be inappropriate for smaller children. It might not be an issue for you, even when you have children, but the movies were marketed towards children. Up until the most recent one, the movies were considered family friendly by everyone except the religious extremists that had issues with witchcraft.
One thing that really bothers me is the fact that people defending things like this, stating that it is wrong to feel that nudity is inappropriate for a children's show and other similar issues, is that fact that they use the same logic they are arguing is wrong. It is not your place to determine if something is appropriate for someone else's children. Yet, you seem offended that some people do.
The biggest issue I have is this, the first three movies were great kid movies. The latest three movies started getting more and more violent, with the last being very inappropriate for smaller children. I am assuming that the last two will be even darker and possibly more violent. Now add nudity and they have made the movie inappropriate for small children, even though the series was marketed as being family friendly. This is going to cause problems in families when children that were allowed to see the first movies are now not allowed to see the later ones (and I am sure the MPAA will give any male nudity an R rating). Parents that don't get the information about the movie are going to be pissed when they see the movie with their kids and find out that it is no longer 10 year olds playing at a school for magic.
I do agree with you that people make too big of a deal about sex and nudity and not enough about violence, but that is a different topic. Unfortunately, Hollywood can't produce anything original anymore and it is considered a new idea with the add an additional explosion. That's why the only thing on TV is:CSI, CSI Los Angeles, CSI Miami, CSI Snowflake, ND, Law & Order, L&O SVU, Criminal Intent, Criminal Intent Parking Enforcement, NCSI, American Idol, American Idol Recap, American Idol Awards Show, So You Think You Can Dance, SYTYCD Recap, SYTYCD Awards Show, Dancing With The Stars, DWTS Recap, DWTS Awards Show, America's Got Talent, AGT Recap, AGT Awards Show, and now they have the acapella version of all the American Idols show.