i wont bet on oval shapes at this moment while Prada is stealing the scene, but i can see more of smaller to tiny, feminine oval shapes (maybe with thin leather bracelets or plain velvet ribbons) as soon as the turn-of-the-century / victorian trend starts taking off (we can already see the first signs)
Prada has created a square trend already, just a close look to all recent watch advertisments will show you how much influence those square Prada have in the global watch market