From the Christian Science Monitor
FTA: For decades, archaeologists thought they knew how the story went: Humans
migrated from Siberia to Alaska over the Bering land bridge during the
last Ice Age,
New research published in Nature and
Evidence from Bison Biology in PNAS.
Regarding the ice-free corridor after the last ice age FTA:
"...we both also agree that the first hard [archaeological] evidence in the
corridor when it finally opens is post-Clovis in age, and likely from
people moving north and not south."
And relatively rare for stories like this; no use of the terms 'Than Previously thought' or 'more research is needed'.