This week current service members with less than 12 years of service as of Dec. 31, 2017, or Guard and Reserve members with 4,320 retirement points or less have the opportunity to 'Opt-In' for the new Blended Retirement System (BRS). However there are stories circulating on social media that some service members unintentionally opted-in to the system this week while on the DFAS MyPay page. Read the full article on Military.com.
For more details on BRS, see this Military.com article.