Jo Wheatley, bakery Author and Great British Bake Off Winner 2011, spoke at the HTA's Catering Conference of what sweet combinations are appearing:
Townie (Tart/Brownie)
Cragel (Croissant/Bagel)
Crookie (Croissant/Cookie)
Pike (Pie/Cake)
Cronuts http://greatcafes.blogspot.co.uk/2013/11/croissant-doughnuts-cronuts.html
Duffin http://greatcafes.blogspot.co.uk/2013/10/doughnut-muffin-duffin.html
plus Cupnut (Cupcake/Donut) and Cheeselova (Cheesecake/Pavlova)