A small recap: On June 21, 2018, Kristine McKenna (co-author of Room To Dream) interviewed Lynch and asked him
Where is Carrie Page right now? David Lynch: No idea. KM: Is she waiting for you to get back to her? DL: I say, it’s calling… but the signal has a lot of disturbances.
Now, what did he mean about "the signal has a lot of disturbances"? The way I see it, it may be one of three things;
1. he's waiting for the right idea to bring the story further, but he's struggling to "catch the big fish"
2. he and Mark are not getting along over the future of Twin Peaks
3. the negotiations with Showtime are not going on very well
Personally I vote for (and hope for) #3. This means the negotiations may have been going on for quite a while, and by now they have overcome their differences and are laying down the final touch, and someone has been whispering (hence the HHM-tweet).
Nevertheless, the choice of the word "disturbances" must've meant
something, eh?