Some pretty good blog post recently have been published by the Office 365 team:

http://community.office365.com/en-us/blogs/office_365_technical_blog/archive/2013/03/09/what-exactly-do-you-get-in-an-office-365-plan.aspx – What, exactly, do you get in an Office 365 plan? Also info on the new Service Descriptions

http://community.office365.com/en-us/blogs/office_365_technical_blog/archive/2013/03/08/updated-exchange-server-2010-deployment-assistant.aspx – Updated Exchange Server 2010 Deployment Assistant – Updated to support Exchange 2010 SP3 and Hybrid with the New Office 365

http://blogs.technet.com/b/exchange/archive/2013/03/04/exchange-server-2013-deployment-assistant-available.aspx – Exchange 2013 Server Deployment Assistant – still does not cover Hybrid with Office 365 but it is coming

http://blogs.office.com/b/microsoft_office_365_blog/archive/2013/03/07/new-lync-online.aspx – The New Lync Online

http://blogs.office.com/b/microsoft_office_365_blog/archive/2013/03/04/office-15-minute-webinar-and-office-365-small-business-premium.aspx – Webinar about the new Office 365 Small Business Premium

http://community.office365.com/en-us/blogs/office_365_technical_blog/archive/2013/03/11/microsoft-connectivity-analyzer-mca-1-0-and-microsoft-remote-connectivity-analyzer-rca-2-1-release-announcement-we-ve-been-busy.aspx – Microsoft Connectivity Analyzer 1.0 released

http://community.office365.com/en-us/blogs/office_365_technical_blog/archive/2013/03/06/new-ignite-webcast-understanding-dirsync.aspx – Ignite Webcast, Understanding DirSync