Nobody knows what the future holds, last night level 2 load shedding was implemented 1:00-6:00 with high chance of it happening again tonight.
They didn't just threaten stage 6 in Dec they actually implemented it for several hours or so.
You can try and follow Eskom's tweeter -
https://twitter.com/Eskom_SA but they only provide info a couple of hours before, if even.