As I was off last week, here's a weekly summary.
Office 365 has gone beta, you can register on http://www.microsoft.com/en-us/office365/online-software.aspx, Microsoft CRM Online is not part of the offer, but the rumor mill is aiming in that direction...
The well known CRMDiagTool has been released for CRM 2011, here's a download link.
The CRM Team has some interesting articles with a Performance Checklist (from experience the connections registry settings are especially important), Recurring Appointments and a SOAP Library for Silverlight
The CRM Uk Blog has an article on running CRM 4.0 client/Outlook 2003 on CRM 2011 (as it's a supported configuration for migration)
If you receive an error “Internet Explorer cannot display this feed” while connection the REST endpoint, Sven has a solution for you.
Leon Tribe has an interesting article on CRM Evolutions from the Forrester studies