I noticed @AmberCutie had trouble retweeting a nude photo from some other account a few days ago. Same thing happened today.
Long story short, without all the screenshots of the tests included, twitter is definitely not allowing nude photos to be retweeted. They are using some nudity detecting software. You can still retweet your own nude photos, just not from other accounts.
Also older retweets still seem to show up fine, they are just applying it to new retweets. And non nude photos from those same 'adult' accounts do retweet normally.
This seems to only apply to twitter homepage and tweetdeck (also owned by twitter). The nude retweets do show up in Tweetcaster app according to a friend of mine.
Long story short, without all the screenshots of the tests included, twitter is definitely not allowing nude photos to be retweeted. They are using some nudity detecting software. You can still retweet your own nude photos, just not from other accounts.
Also older retweets still seem to show up fine, they are just applying it to new retweets. And non nude photos from those same 'adult' accounts do retweet normally.
This seems to only apply to twitter homepage and tweetdeck (also owned by twitter). The nude retweets do show up in Tweetcaster app according to a friend of mine.