The Dinos have cleared the mark 2B (W2B) of it's worm drive for operational use. Although the worm hole generated is the same size as the current mark 2 (and the mark 1 though this was not man-rated) time between jumps has been reduced which means the real-terms speed has been increased to 4950c. The W2B has also seen improvements to power consumption and worm hole stability.
The W2B will also be available on the Dinomark XT for the first time as well as being standard issue on new PTs. Not all new XT/118s will have worm drive but a number will and these will be designated as XT/118a. Ronald's personal ship, the original Dinomark, has just been fitted with a W2B drive.
It is rumoured the Mark 3 is currently in advanced development and could enter service within a year or so. This will see a speed boost to around 7000c.