Even though Office 15 isn't due out until 2013,  Microsoft is already looking for input for Office 16 from Access developers.

At the end of March, Microsoft is holding the Office 15 Developer Kitchen, an on-campus event involving a small group of customers and is looking for Access developers to share their early experiences and guide the next stage of development of the Microsoft Access product.

While the main focus of the event is Office 15, due to ship in 2013, the Call for  Participation suggests this is an opportunity to "provide input for Office 15 and Office 16".

The conference is free but participants are expected to pay their own expenses. So if you want to provide some input on Office 15/16 now is your chance.