QuarkXPress 10 does not support AVE Export. However, if AVE export is required we recommend using QuarkXPress 9.x.
QuarkXPress 10 will continue to offer support for Print, PDF, ePub, Kindle, HTML5-based native Apps and Web Apps (last two via App Studio).
For the future we have some compelling ideas for Digital Publishing, especially for web publishing, so please stay tuned. And as QuarkXPress 10 heavily concentrates on HTML5 for Digital Publishing, it will be all around HTML5.
For more information please visit:
http://forums.quark.com/t/33059.aspx
http://forums.quark.com/p/32816/122853.aspx#122853