The judder never went away, the judder was there in 1.5 beta and all the Horizons beta. However, it's not consistent. Sometimes supercruise is perfectly smooth. Other times it feels like it's only 25 fps when you turn your head (with lots of ghosting). But there's no rhyme or reason to it. Sometimes it's smooth even though there are lots of NPCs and I'm near a gas giant rings. Other times it judders despite only 1 NPC showing on the scanner and I'm in deep space. (This is all in the same instance of the game - in one system, perfectly smooth, hyperspace to the next system, judder).
This is with an overclocked i7, overclocked GTX980 and Rift DK2, Windows 8.1 with the 0.5 Oculus runtime.