While Microsoft is still presenting about the new wave of product, namely SharePoint 2013, Office 2013, Lync 2013, Exchange 2013, and the new Office 365, I will briefly share some information:
First, you can test it yourself right now! Visit http://www.microsoft.com/office/preview/en/whats-new and try any of the new options (e.g. Office 365 Enterprise).
Want to know how the new Office 365 TeamSite looks like? Here it is:
What has been improved as well is the new Public Website, have a look at it here:
https://modery15-public.sharepoint.com/