I was in the same predicament as you. I failed my test in September and was hoping to do a test now in October or in November, but they were fully booked until December which is when the test changes. It seems like everyone wanted to do the test before the new changes.
I have started doing the new manoeuvres and they are so much easier than the reserve around the corner, although I am annoyed that they took off the three point turn. The bay parking is better that we learn now than after we pass the test as you don’t realise how hard it can be to master it. Although the majority of people do do it rather than the reverse parking and they make it look easy, it’s different when you are in the drivers seat. I actually thought that it would be easy, but it took me a whole lesson and a half to get the hang of it. Regarding the independent driving, I asked my instructor and he said that it is possible that the sat nav will be the independent driving. What has happened in the past, including me in the test, was that there was a lot of misunderstanding as the examiner wasn’t clear and that was what failed me, which is why they are bringing in the sat nav as well as us knowing how to follow it and use it in the future. But he said it’s not certain until they receive more information from the DSA.
Don’t be scared of the new test; it actually is so much easier. Personally, I prefer the new test than the old one