the msft bulletin says sms, contacts, calendar will be transferred from myphone to skydrive. but it does not specifically mention whether skydrive will be able to sync.
skydrive currently has a 1000 file limit/mo. depending on how sms, call logs, etc are stored, it might not be feasible to keep the same limit and allow syncing.
you can read more about it here:
Microsoft My Phone Service Shutdown