Turkey intends to have a buffer zone and protect its sponsored FSA. Assad's govt funnily enough don't want that and point to Turkey being unable to separate the Jihadists from their sponsored FSA. Assad's govt have been (allegedly) attacking the OPs on and off for a while now, hence Turkey beefs them up. Meanwhile Russia says the right things to Erdogan, soothes his ego, it calms down for a couple of days and Assad's forces carry on a bit later.It looks that way. The M5 is reportedly under constant bombardment north of KS (well, constant enough to prevent safe movement). Large Turkish convey with base components, armour, etc heading south. Speculation is they will create new OP north of KS. SAA can go around those OP unless Turkey fights so not sure what Erdoğan intends.
The bigger question is whether this escalates to open warfare between Assad's forces and Tr regular forces. After all, Erdogan could switch those forces intended for 'east of the Euphrates' to the Idlib area and set his MIT against another target set.