If you're currently in year 11, you're caught of stuck in the middle.
Some A levels will still have the original way of doing things, some won't.
Basically, for the new changed ones, you will sit an exam at the end of the year and this will gain you the AS qualification. The next year, assuming you still take it, the exams you take in year 13 will contribute 100% to your A2 grade. Ie your AS grades have no impact on your A2.... If that makes sense?
Whereas for the other subjects, your AS marks play an impact on your overall A2 grade, which is how it's currently done
If other parties come into power.. I got no idea tbh