Question: Who confirmed the date of filming for the sequel to Before Sunset?
About the article "Before Midnight (film)", section "Production".

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Linklater, Hawke, and Delpy all suggested the possibility of a sequel to "Before Sunset", with Hawke saying that it would be nice to develop further the course of Jesse and Céline's relationship and stating that "I'll be shocked if we never make another one".
In a video interview in November 2011, Hawke said that he, Delpy and Linklater "have been talking a lot in the last six months... all three of us have been having similar feelings that we're kind of ready to revisit those characters... there's nine years between the first two movies... if we made the film next summer, it would be nine years again, so we started thinking that would be a good thing to do.
So we're going to try and write it this year."
In June 2012, Hawke confirmed that the sequel to "Before Sunset" would be filmed in summer 2012.
In September 2012, it was announced the sequel, entitled "Before Midnight", had completed filming and would premiere at the Sundance Film Festival in January 2013.
The film was released in May to widespread acclaim, and received an Academy Award nomination for Best Adapted Screenplay. 
Linklater, Hawke, and Delpy all had suggested the possibility of a sequel to "Before Sunset".
In a video interview in November 2011, Hawke said that he, Delpy and Linklater "have been talking a lot in the last six months.
All three of us have been having similar feelings, that we're kind of ready to revisit those characters.
There's nine years between the first two movies and, if we made the film next summer, it would be nine years again, so we started thinking that would be a good thing to do.
So we're going to try and write it this year.
"In June 2012, Hawke confirmed that the sequel to "Before Sunset" would be filmed in summer 2012.
Soon after, Delpy denied filming would take place in 2012, stating that they were still only writing the script and that filming would not take place until "sometime in the next year, year and a half."
However, in August 2012, numerous reports emerged from Messenia, Greece, that the film was in fact being shot there.
When asked about the reports, this time Hawke stated that he, Delpy and Linklater were in Greece only to write the film, telling MTV News that "we're here writing a third installment to "Before Sunrise".
If it works out, we'll film it, and if it doesn't, we won't.
It's not really worth talking about.
I'm just here developing."
However, Hawke and Delpy's denial was proven to be a ruse when the completion of filming of the new movie, titled "Before Midnight", was announced on September 5, 2012.
Linklater later revealed that after 10 weeks of writing and rehearsing, the film was made in 15 days for less than $3 million, and he aimed to take it to a film festival in early 2013.
On July 3, 2013, after the box office success of the film, Lionsgate CEO Jon Feltheimer officially confirmed that there will be a sequel to the film with production beginning in 2014 for an unspecified release date.
Louis Leterrier confirmed he will return to direct the sequel.
Jesse Eisenberg confirmed he and the rest of the main cast will be back for the sequel. 
A sequel, tentatively titled "Fast & Furious 7", was announced in April 2013.
Lin would not return to direct the sequel as Universal pursued an accelerated schedule for the film, with a release date scheduled for July 11, 2014, just over a year after the release of "Fast & Furious 6".
Lin was replaced by director James Wan that same month.
After the death of Paul Walker during filming, the release date was postponed to April 10, 2015. 
On June 18, 2013, Warner Bros. announced plans for a sequel titled "Dolphin Tale 2", with a scheduled release date of September 19, 2014.
The sequel will focus on a new baby dolphin named Hope who also resides in the Clearwater Marine Aquarium.
Cast and crew began filming in October 2013.
All Cast members will reprise their roles while Lee Karlinsky, Bethany Hamilton and Julia Jordan will join the cast.