Look, another week, another "4e Rumor" thread.
No, WotC has said repeatedly that they have no intentions of creating another edition, and that if they did they will give at least one years notice, possibly two. Since even if they were quietly planning on 4e, it would be under a non-disclosure-agreement until it's formally announced, if some "fairly big industry type" knew about it and was spreading it, they'd be inviting some big lawsuits, so I seriously doubt anybody who would really know would be saying. Professionals don't break NDA's to spread random rumors to strangers.
They know 3.5 is selling well, and they even admit that a 4th edition is inevitable, one day, they've said repeatedly that they don't want to mess with something that's working quite well for them now. Now, idle speculation by people who may be "in the industry" but still don't know what's going on could say anything, but that's idle speculation.
WotC will certainly debut any new edition at Gen Con, which means that any announcement is likely to happen at Gen Con. At the earliest, I could see an announcement in August '06 for an August '07 release, but even then I think it will be a few more years.
