For those of you crying "fake" automatically because it is not the same animation style that we are used to, it is possible that these are real. If anyone remembers watching the first episode of season four, you might have noticed that that episode uses a completely different animation technique compared to the rest of the fourth season. Episode one used a technique that was completely done on computer using a program similar to the animation program ToonBoom (or the cartoon Angel's Friends) while the rest of the episodes were the traditional "hand-drawn" types, the usual style of episodes that we are used to. However, that does not mean that these are real.
To continue, the first set of pictures were accompanied with the following:
Notice on the very right of the picture is another person behind Musa who may or may not be Roxy judging by the colour palette!
Puzzling, isn't it? The Winx Club are in there season three outfits (with possibly Roxy!), yet Stella is carrying her handbag from her Frutti Music Bar outfit. Is it a bad joke, or is someone hinting at us that these are real by placing Stella's bag (and possibly Roxy!) in the shot?
Only time will tell...
Feel free to talk more about Season Five in the forum! I have noticed that no one goes on anymore.
UPDATE 12-21-10: I'm told that this is fanart or from a Russian video game in the comments. That's nice and all, but that is not proof. For all I know, you could be lying. Here's the deal, I won't believe you until you show me proof that this is fanart or from a video game. By proof, I mean the original source of the images and a sufficient statement. Then I will post a retraction if necessary. Until then, these are images that may or may not be from season five.