You didn't jump the gun by much! I saw someone on Strava do a ride along this section a day or two before you posted.
Today, the Blue Ridge Parkway Official Facebook Page posted that as of August 29th, the Blue Ridge Parkway opened from Milepost 420.2 to Milepost 423.2. This means that there is now uninterrupted access from Milepost 382 in Asheville all the way to the Terminus of the Parkway at Milepost 469 in Cherokee. Devils Courthouse trail is open now as well!