From the Omaha.com live blog at the meeting:

Brian Norton, OWHsports:
It's official, from Lee Barfknecht:

Nebraska has officially accepted an invitation to join the Big Ten Conference, The World-Herald learned early Friday afternoon.

Two sources from conference offices said that Big Ten Commissioner Jim Delany contacted BIg 12 Commissioner Dan Beebe on Friday morning to inform Beebe that Delany had officially invited Nebraska to join.

A source with direct knowledge of the situation said Nebraska accepted.