According to the date stamps visible here,

the production line for the Pocket seems to have begun in earnest
(as in ready for publicity photo sessions)
today ?

As usually may be expected,
qc inspections, boxing, softwaring and a trainload of other events
comprise the timing between now
and when people will actually begin to experience the units.

More info on getting linux may be guessed at by reading
the adventures of linux on the GPD WIN

Looking hackable.