Most manufacturer won't add in a speedy SSD because of $.
If they add in Samsung SSD, the overall price will jack up a fair bit.
They usually use cheap SSD brand like LiteOn, Toshiba.
Sandisk also very rare seriously, even if they use Sandisk it
will be X series which is intended for OEM market
and low power type not speed.
My Dell G3 is using Sandisk X600, not a speedy drive but
it is decent enough.
As for WIFI, it's a E series Thinkpad which means budget.
Unlike T series you won't have option for better WIFI
or even LTE.
Take note if this E series sell well, maybe they will sell the
A series.
A series will be the premium version like last time there was
E475 and A475.