Microsoft just released SharePoint 2010 Beta 2! Beta 2 will consist of build 14.0.4536.1000. For Beta 1 users only or partners running an earlier version e.g. 14.0.4514.1009 (Beta 2 Escrow), you can upgrade to Beta 2 by installing this update: KB_COMING_SOON Download your copy of SharePoint 2010 Beta 2 from MSDN Subscriptions (Subscribers only at this point)
Notes: PLEASE REVIEW the hardware and software requirements for SharePoint 2010. These include cumulative updates and hotfixes for SharePoint 2010 to install properly http://technet.microsoft.com/en-us/library/cc262485(office.14).aspx At last news, Beta 1 and Beta 2 will time-bomb (expire) on October 31, 2010.
http://msdn.microsoft.com/en-us/library/ee554869(office.14).aspx
Official Microsoft SharePoint 2010 Website http://sharepoint2010.microsoft.com
SharePoint 2010 on MSDN http://msdn.microsoft.com/en-us/library/dd776256.aspx
SharePoint 2010 on TechNet http://technet.microsoft.com/en-us/sharepoint/ee263917.aspx SharePoint 2010 Technical Articles on TechNet http://technet.microsoft.com/en-us/library/ee428287(office.14).aspx SharePoint Developer Center http://msdn.microsoft.com/en-us/sharepoint/default.aspx SharePoint 2010 Development Hands On Labs http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=c010fc68-b47f-4db6-b8a8-ad4ba33a35c5#filelist