Impossible to say unless you're a fly on the wall in the RMT/TOC/NR/DfT meeting room. The industry is very much making plans that it is going ahead, and it's only 12 days out.
There comes a point where even if the industrial action is cancelled the strike schedules will be run anyway.
I'd say there is absolutely no prospect of that happening.
If you are travelling on along a major route, there will probably be a service. But it will likely be very busy. You may not be able to get on the first train that runs.
Obviously none of us are privy to the negotiations that are going on at the moment, but it seems exceptionally unlikely that there will be any agreement reached anytime soon. Even if an agreement is reached, if this happens only a few days away from the strike date, it will be too late to revert to the normal timetable and the strike timetable will likely be all that runs.
Thanks all for your replies. I think I've found an alternative way home that doesn't involve the railway!