Gokaiger Goseiger Super Sentai 199 Hero Great Battle

So, the official title of the rumored Kaizoku Sentai Gokaiger teaming up with all 34 previous Super Sentai teams movie is comfirmed to be entitled, Gokaiger Goseiger Super Sentai 199 Hero Great Battle!
So, it's practically Gokaiger vs Goseiger feat. All Super Sentai. Wait, didn't they say that Goseiger and the other previous sentai members had lost their powers and had them inherited by the Gokaigers? Well, to find out more, you gotta CHECK OUT THE INFO!! XD

Gokaiger Goseiger Super Sentai 199 Hero Great Battle (ゴーカイジャー ゴセイジャー スーパー戦隊199ヒーロー 大決戦, Gōkaijā Goseijā Sūpā Sentai Hyakukyūjūkyū Hīrō Daikessen) is a film originally set for release on May 21, 2011, to commemorate the 35th anniversary of the Super Sentai Series.The film will primarily feature the casts of Kaizoku Sentai Gokaiger, Tensou Sentai Goseiger, and Himitsu Sentai Goranger, among the 199 total heroes from the Super Sentai series to appear. On March 16, 2011, Toei released a statement concerning the effects the 2011 Tōhoku earthquake and tsunami have had on the filming schedule, and the film's release will be postponed to an undetermined later date. But rest be assured that Toei had store all the epic fun for us fans! XD

 Here's some backstory of the movie,

When the 34 super sentai teams had fought the great Legendary War and won the battle againts the Zangacks, but it resulted in losing their powers. We later find out their powers are theoretically stored/turned into a utilizing item called Ranger Keys, which were used by the Gokaigers to transform into previous sentai members!

The movie will begin with the 5 Gosei tenshi appearing, who's unable to transform due to losing their powers during the great Legendary war. Somehow somewhere, the 5 powerless Goseigers boarded Gokai Galleon and found a treasure chest full of Ranger Keys. They picked out they're respective ranger keys that resembles themselves and surprisingly, they had their powers back. So, they stole the whole chest to find out if it'll return the powers to their rightful owners.

 On the other hand, the Zangacks join forces with an evil organization called, the Black Cross Army. Which was the evil group that fought the first Super Sentai team, Himitsu Sentai Goranger. The Zangacks was so eager to defeat the Gokaigers and decide to help the Black Cross Army to revive their great leader, the Black Cross King!

When Black Cross King was revive, other sentai villains were revived as well, and the villain that would correspond to the Gokaiger and Goseiger teaming up would be none other than the fallen tenshi, Burajira, who's now a part of the Black Cross Army.

When Gokaiger return to their ship, they found out that their treasure chest full of Ranger Keys were missing, they went tracking it down, and found out that the Goseigers had it. Like all "VS" Sentai movies, the Gokaigers and Goseigers didn't get along pretty well. During some misunderstandings and arguments, the treasure chest was stolen by the Black Cross Army and turned the Ranger Keys powers into theirs. With no other Options, the Gokaigers had to team up with the Goseigers.

 So, turning all the Ranger Keys for evil uses, well.. It's clear to us that we'll get to see somewhat similar to Decade's Rider War, where are the riders are againts Decade. But we'll replace Decade with Goseigers and Gokaigers, and all the riders with the evil super sentai!

But rest be assured, cause our heroes will get a special back-up from some unofficial extra sentai members!! XD

Oh, so they are the extra 12 in the 199. Because the official sentai members are all 187(which all fought the great legendary battle).
Anyway, please don't take some of the written synopsis seriously, as it may turned out to be false rumors.
Source: Modxtoy, Jefusion, Wiki