According to Scouting Wire, the Boy Scouts of America organization is not changing their name. Just the sub program "Boy Scouts" ages 11-17 is changing to "Scouts BSA". Individual troops will still be all Boys, or now or all Girls.
May 8th, 2018: Today the LDS Church announced the official split with Boy Scouts of America will occur next year, December 2019. Scouts will continue to run as usual until then.