Tony Redmond explains his TEC experience in his blog and he mentions about the updates in Exchange 2010 SP2 that was discussed in the conference. He writes,

**** In terms of what’s next for Exchange, Kevin (Exchange GM) briefly talked about features that will appear in Exchange 2010 SP2 later this year. Three major updates were discussed:

  • Address Book Policies (ABPs), also known as “GAL segmentation”. This feature is described for Exchange 2007 in a white paper but Microsoft knew that the approach taken (ACLs) would break in the Exchange 2010 architecture, which indeed happened in Exchange 2010 SP1. ABPs follow the same route as other policies (OWA, ActiveSync, etc.) applied to mailboxes in that an administrator can create policies that establish what objects in the GAL can be viewed by a user. The default policy is equivalent to today’s GAL – you can see everything. But administrators can narrow things down by establishing policies that might restrict a user to only being able to see GAL objects that belong to a specific department or country and then apply that policy to mailboxes using EMC or PowerShell. In effect, address book policies create virtual views into the GAL that administrators can amend to meet company requirements. See the Exchange team blogfor some more information.
  • Device overload: Microsoft acknowledges that it’s difficult for administrators to know how well mobile devices work with Exchange and with the mass of clients that can connect to the server. Recent issues have occurred that caused recurring meetings to be deleted by some clients because of a lack of interoperability testing that might have surfaced the problem. A new ActiveSync testing lab is being established to help improve interoperability between devices produced by different vendors including RIM, Apple, Microsoft, and Android.
  • --> The rest is on the blog :