The way FD are reacting (or rather not reacting) to this makes me think it's either utter bobbins and and they're not concerned about it ...or it's somehow 'sanctioned'.
Well, I remember last year a fake leak came out about chapter 4. A guy said that he talked to some FDev employees at a bar and after some chatting they gave him informations about what was coming.
In that case, people started to speculate on the thread and at some point Ed came in to make it clear that the leak was false, that he knew what was coming in chapter 4 and that the information given in the leak was bullsh*t.
So...they felt that the leak needed to be discredited.
In the actual case, Fdev is fully aware for weeks about it but didn't comment but I think it's the best choice to stay silent on this one
"Hi CMDRs,
just wanted to let you know that we are aware of the leak. It's total rubbish. Spaceleg isn't coming in 2020 but we still have some very exciting stuff coming that we can't talk about right now."
Players : WHAT NO SPACE LEGS !!%?! FDEV YOU @#*(@#%&?(%@#?%?@# !!!
#Salt #CryBabies
Perhaps they aren't commenting because they know that they'll release official informations soon (1-2 months) about it anyway and that the leak doesn't compromise anything.