Robin Williams
Williams portrays a man who accepts his sexuality in Boulevard.Twitter

The poignant trailer for the late actor Robin Williams' film Boulevard has been released.

In the movie, the Oscar-winning actor, who died at age 63 in 2014, plays Nolan, a sexually repressed 60-year-old man who begins to question his marriage and sexuality when he befriends a young gay street hustler played by Roberto Aguire. Initially seeking companionship, he changes his perspective on life as he finally embraces his true sexuality and authentic self.

"Maybe it's never too late to finally start living the life you really want," says his friend Winston, played by Bob Odenkirk.

Revealing his sexual preference to his wife Joy, played by Kathy Baker, Nolan says: "I love you, Joy. That was never a lie."

Williams posthumously starred in the comedies A Merry Friggin' Christmas, which was released last November, Night at the Museum: Secret of the Tomb, which was released the following month and saw him reprise his role of Teddy Roosevelt, and Absolutely Anything, a 2016 film in which he provides the voice of Dennis, a dog.

He also starred in the death-themed film "The Angriest Man" as a man with 90 minutes to live and reconcile with his family.

"Boulevard," directed by Dito Montiel, is Williams' last dramatic work before he committed suicide last summer.

The release of the trailer saw #Robin Williams trending on Twitter, as fans of the much-loved star expressed their ongoing sense of grief at the loss of the star who brought laughter into the lives of millions.

"I still cry when I see anything with/about Robin Williams" wrote one fan.

"Nothing in this world will ever be greater than Robin Williams in dead poets society and I have yet to come to terms with this," said another.

The Oscar-winning actor took his life at his Northern California home. He was found in the bedroom of his home on the morning of 11 August 2014.

The Marin County sheriff's office released the autopsy results on 7 November, ruling the death a suicide resulting from asphyxia by hanging.

The 63-year-old was reportedly suffering from severe depression and waged a public battle with addiction for many years. He had recently entered a 12-step rehab programme for drug abuse.

It was later suggested that Williams may have committed suicide after being diagnosed with Parkinson's disease.

Boulevard gets a limited release on 10 July. Watch the trailer below: