Looks like they just did:
http://www.microsoft.com/mscorp/twc/privacy/spam_callerid.mspx
Quoting wayne (wayne(_at_)midwestcs(_dot_)com):
fyi;
MicroSoft will announce Caller-ID next Tuesday. See:
http://www.pcworld.com/news/article/0,aid,114911,00.asp
-wayne
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