Do you have a source? That would qualify as news.
Where did you see this?
21 days is still the quarantine time. 42 days with no new cases is for an area to be declared virus free.
http://thecount.com/2014/10/14/who-ebola-incubation-period-42-days-not-21/
In the quoted WHO statements the period is 42 days. True, only 3 - 5% of infections happen after 21 days, but that seems to be a pretty high number for something this serious.