SpaceX Second Falcon Heavy Launch in about 4-5 months

The second SpaceX Falcon Heavy launch will be in December, 2018 or January 2019.

The next Falcon Heavy will be using the upgraded Block 5 boosters.

There are 8 to 10 launches remaining on SpaceX’s 2018 manifest and there will need to be extensive reuse of Block 5 boosters to prevent or mitigate delays.