We have a couple of new posters to bring you this afternoon from two of the summer's biggest releases: Transformers: Dark of the Moon and Harry Potter and the Deathly Hallows - Part 2. As for the Transformers sheet, it features a none too pleased Optimus Prime who looks to be reminding/threatening moviegoers to check out the film in IMAX 3D (yay for box office inflation!). On the Harry Potter side of things, Warner Bros. seems intent on reassuring all of us of two things: 1) that the Potter franchise is indeed coming to a close and 2) that all of these new posters will inevitably stop as a result.Hit the jump to check out the new posters. Transformers: Dark of the Moon hits theaters on June 29th while Harry Potter and the Deathly Hallows - Part 2 opens in 3D on July 15th.Here's the IMAX 3D Poster for Transformers: Dark of the Moon:Here's the concise, albeit official, synopsis:

Shia LaBeouf returns as Sam Witwicky in Transformers: Dark of the Moon.   When a mysterious event from Earth’s past erupts into the present day it threatens to bring a war to Earth so big that the Transformers alone will not be able to save us.

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Here's the new Harry Potter and the Deathly Hallows - Part 2 sheet [from Facebook]:

harry-potter-and-the-deathly-hallows-part-2-lord-voldemort-poster

Even if you already know it by heart, here's the official synopsis:

“Harry Potter and the Deathly Hallows – Part 2,” is the final adventure in the Harry Potter film series. The much-anticipated motion picture event is the second of two full-length parts.

In the epic finale, the battle between the good and evil forces of the wizarding world escalates into an all-out war. The stakes have never been higher and no one is safe. But it is Harry Potter who may be called upon to make the ultimate sacrifice as he draws closer to the climactic showdown with Lord Voldemort.

It all ends here.

“Harry Potter and the Deathly Hallows – Part 2” stars Daniel Radcliffe, Rupert Grint and Emma Watson, reprising their roles as Harry Potter, Ron Weasley and Hermione Granger. The film’s ensemble cast also includes Helena Bonham Carter, Jim Broadbent, Robbie Coltrane, Warwick Davis, Tom Felton, Ralph Fiennes, Michael Gambon, Ciarán Hinds, John Hurt, Jason Isaacs, Matthew Lewis, Gary Oldman, Alan Rickman, Maggie Smith, David Thewlis, Emma Thompson, Julie Walters and Bonnie Wright.

The film was directed by David Yates, who also helmed the blockbusters “Harry Potter and the Order of the Phoenix,” “Harry Potter and the Half-Blood Prince” and “Harry Potter and the Deathly Hallows – Part 1.” David Heyman, the producer of all of the Harry Potter films, produced the film, together with David Barron. Screenwriter Steve Kloves adapted the screenplay, based on the book by J.K. Rowling. Lionel Wigram is the executive producer.

Behind the scenes, the creative team was led by director of photography Eduardo Serra, production designer Stuart Craig, editor Mark Day, composer Alexandre Desplat, visual effects supervisor Tim Burke, and costume designer Jany Temime.

Warner Bros. Pictures presents a Heyday Films production, “Harry Potter and the Deathly Hallows,” which marks the last installment in the most successful film franchise of all time.

“Harry Potter and the Deathly Hallows – Part 2” will be released worldwide in theatres and IMAX, in 3D and 2D, beginning July 15, 2011.”