In these kind of scenarios, 1 or 2 degrees can make all the difference when it comes to the precipitation type, whether it falls as rain, sleet or snow. Not only is the temperatures critical, but location is pivotal. While you may have all rain where you are, someone just 10 miles up the road could have sleet.
Although north Mississippi could be in for a small icing event, which could still cause power outages and travel problems, I don't think central Mississippi will get that much. Some light accumulations of rain, sleet and snow will be possible. And as I've mentioned several times on WLBT, if you are the least bit concerned about driving in this weather on Thursday and early Friday, don't. Roads will be passable, but it's the driving of the inexperienced that can cause problems. If you live in a rural area, be prepared for outages just in case you get a heavier glaze on powerlines and trees than others.
Here is the National Weather Service's graphical depiction of what is expected late tonight and Thursday. Find your county and you'll see what is "possible". Meantime, I'll be with you on WLBT throughout the duration, giving you the latest updates and forecasts.