end support for new Google Sync users looking for free Microsoft Exchange ActiveSync support today, January 30th. This was in order to give Microsoft time to implement support for open standards CalDAV and CardDAV, but Microsoft had been asking Google for more time. Microsoft said that it was working on an update for Windows Phone which would add DAV support, but asked for an extra 6 months to work on the update. This may or may not have been due to the timing of Google's announcement, which came just before many Microsoft developers were set to go on holiday vacation.Originally, Google said that it would
Had this extension not been given, it was assumed that Google contacts and Calendar would have stopped syncing to any new Windows Phone 8 devices, although Gmail would have continued through IMAP. Now, Microsoft has been given the time it asked for, so we should be expecting an update for Windows Phone 8 and Windows 8 by this summer.
source: The Verge