Some highlights:
- Drag and drop files from your desktop to SharePoint Online (Office 365) document libraries.
- Deep integration with personal and corporate SkyDrive.
- Conversations are attached to all sites by default.
- Aggregation of SharePoint, Exchange, and Project tasks.
- SharePoint 2013 Windows phone app for version 7 and 8
- Yammer social capabilities will be integrated into SharePoint to improve communication both internal to your company, and externally with partners and customers. Over 200,000 companies use Yammer including 85% of Fortune 500.
- Access SharePoint documents from Yammer.
- Yammer will be free to SharePoint online customers.
- Cloud, cloud, and more cloud. You can run your own servers, but they recommend cloud.
- Search - personal re-find links will show when you search for things you've already looked at saving you from going to the search results page. Search results will give links to sections inside a document.
- You can now create SharePoint content with virtually any designer tool (not limited to SharePoint Designer).
- eDiscovery uses discovery sets and queries to make you a hero to legal. Works across multiple Microsoft Enterprise apps (ex. Exchange).
- "Site mailboxes" show data like a document library in your Outlook .
- 40% better use of bandwidth.
- 4X image compression.
- The new Cloud App Model Ecosystem allows developing SharePoint apps for on-premise or SharePoint Online.