Avengers 4 Trailer ‘set For Release This Friday, Claims Very Reliable Source’ express.co.uk

And since the Marvel epic’s sequel gets its cinematic release at the same time of year in 2019, fans have been banking on the Avengers trailer arriving at some point in the next couple of weeks.
Writing on Twitter, he said: “Unconfirmed but a very reliable source is claiming the trailer for Avengers 4 is coming THIS Friday!”
“It’d be a nice surprise, but next week still feels like the time.”

Daniel R later clarified: “Someone very reliable said he heard Friday, but he wasn't sure.

“So again ‘Unconfirmed’. We'll see. If not this week then next week should be it. #Avengers4.