BCM 2010 RTM is not ready and probably there won't be one, instead you will get BCM 2010 Final for free on Microsoft Website sometime in June 2010. (That is what my sources told me.) As BCM 2010 Beta will not work with Outlook 2010 RTM, you need to wait either till June 2010 or use Outlook 2010 Beta.
Do you (or your contact) know if the Microsoft Accounting 2009 Program would still integrate into a BCM database? I read that MS gave up on developing the Accouting Profressional program with 2009 being the last. I knew that the BCM Beta wouldnt run on the RTM. bummer.
On 24 May 2010 there has been a release on torrent which works with Office 2010 RTM. Microsoft.Business.Contact.Manager.2010.x86.Volume.License-iNDiSO Microsoft.Business.Contact.Manager.2010.x64.Volume.License-iNDiSO Google for more information.