Brian May wrote on his website that although they enjoyed Kiss' company at the VH1 Honours, there are no plans for any tour with them. For more info, check his website: http://www.brianmay.com

Like reported here a few days ago, Kiss had already belied the rumours about a Queen+Kiss tour:
http://www.queenzone.com/queenzone/news_view.aspx?news_id=3847