The 4Q GDP will be released on March 1
In their own words:
The GDPNow model estimate for real GDP growth (seasonally adjusted annual rate) in the fourth quarter of 2018 is 1.9 percent on February 25, up from 1.4 percent on February 21. After this morning's wholesale trade report from the U.S. Census Bureau, the nowcast of the contribution of inventory investment to fourth-quarter real GDP growth increased from -0.58 percentage points to -0.15 percentage points.
The next estimate will be February 26. The 4Q GDP will finally be released on March 1 after the delay as a result of the government shutdown.