Now, I’m sure, as soon as we original backers get our estimation mails, some will complain “so, the original backers will have theirs till easter, this likely means I’ll get mine… Xmas… 2022… 
”
To put things a bit into perspective (as can also be extracted from the first post here), I updated my old stats post 3500 phones ordered, almost $2.5 million raised
To summarize:
The original backers ordered about 3000 phones. Let’s assume 500 got theirs already.
That means about 2500 should to receive an estimation email soon.
By the end of 2018, about 1000 new orders had been placed.
Depending wheter you assume linear growth or not, it would be about 1000 more in 2019 and 2020 (or more, or less 
)
In other words, (with linear extrapolation), the original backers are almost 50% of sales.
Of course these numbers are speculative, and orders could have increased or decreased or both 