Daybreak Games also posted the following FAQ:
When will DCUO launch on Switch?
DCUO will launch on Switch on August 6, 2019.
Will my account or characters transfer from other platforms to Switch?
No. Players will connect to DCUO using their Nintendo Accounts, which will not be linked to
Will DCUO on Switch be free-to-play?
Yes. As on other platforms, DCUO will be free-to-play on Switch.
Will DCUO on Switch allow crossplay?
DCUO will launch on Switch with a brand-new, fresh server, separate from all other communities. We look forward to exploring crossplay options in the future.