Microsoft began issuing Patch Tuesday updates publically in advance over ten years ago, but from next every second Tuesday of the Month, if you want to see what security patches Microsoft is going to issue, then you will have to pay for it.
UPDATE ALERTS FOR PAID CUSTOMERS ONLY
Yes right, Microsoft has decided to ditch its Advanced Notification Service (ANS) and will no longer be
Source: Microsoft Kills Public Patch Tuesday Advance Notifications; Now for Paid Members Only