With the commercial availability of Office 365 for Business since yesterday, you can now evaluate RTM version of Office 365 for Business running latest Microsoft product: Exchange 2013, Lync 2013 and SharePoint 2013.
To compare each plan with which features are available go to http://office.microsoft.com/en-001/business/compare-office-for-business-plans-FX102918419.aspx
If you already have Office 365 subscription (running 2010 product version), you will get notified when your upgrade is planned. You will have different upgrade option:
- Do nothing: your upgrade will be perform as scheduled within the 30 days starting your notification
- Evaluate: your current subscription will continue to run with 2010 version while some identified users will be upgraded and will use your future cloud platform running on 2013 product version
- Delay: you can ask for delayed your upgrade