Post monthly is out now for stake.us. Hopefully stake.com is next! I think for stake.com they will release it this evening because it's a leap year. They won't miss this opportunity to release post monthly in leap year.
As AHOY said, I think most global users are now in March already which means it is no chance to get post monthly but it is possible to get pre-monthly. Since it is rare to get such a bonus on Friday (close to the weekly), I think we may get the pre-monthly bonus next Monday. As usual bonus for .com users is usually come 2-3 days later after the .us players.
I can't see any special offers for this day unlike other casinos that offer only a x20 wager requirement for boosting 30% deposit (like FortuneJack).
I will prefer to say that bonus with wagering requirement is not special. As far as I remember, there is no single bonus like that since the first day of Stake came to the industry. By this fact, I can say that Stake is not like other casinos that usually offer deposit bonus, reload bonus, etc with wagering requirement. What they offer so far can be said as the best in the industry which is based on user's activities although they have reduced it a lot some time ago.