Now (mostly) averted with its official release date of December 18, 2015. The others are likely to come out in the summer.
Flip Flop of God: Lucas made statements claiming that he both had and did not have plans to create episodes VII, VIII and IX. For a long time, Lucasfilm's official stance was that the saga culminated with Luke saving his father and confronting The Emperor, and since that had happened there was no need to create further feature films. However, in late 2012 he sold Lucasfilm to Disney Pictures for an estimated $4.05 billion, so they could produce new films every "two to three years" with the franchise continuing "well into the future".
Hey, It's That Voice!: Also overlaps with The Other Darrin: Many countries has dubbed the whole original trilogy in the respective languages more than once: The worst offender are the Japanese versions, since only just the first movie was dubbed about six times, and excluding the upcoming Blu-Ray version (and with different voice actors) since the original trilogy was broadcasted by many Japanese networks in the past. This is averted with the prequels, since George Lucas wanted a consistent voice cast between all the movies, regardless the network or media format.
The battle was finally featured in the single-player campaign of Star Wars Battlefront 2, where the rebels received an epic curb-stomping by some verypissed off 501st veterans. How the ceremony at the end of A New Hope fits into this was initially unclear, but The Essential Guide to Warfare establishes it took place not long after the Death Star battle, while the Battlefront 2 fight happened during a subsequent several-month-long siege of the Yavin System by the Imperial military.
Many things were considered over the years, considering the vastness of the franchise. A major thing to consider is that George Lucas originally wanted to serve as a mere supervisor as nine films were made under different directors, and looking forward to seeing how the franchise evolved with different people Running the Asylum. As things continued on (Possibly due to a disasterous incident of "leaving it in someone elses hand") he took more direct control of The Verse. The more recent Star Wars television productions seem to be him trying to salvage what was left of that original intent.
In the Leigh Brackett first draft script of Empire, Vader and Anakin were two separate people; Anakin showed up to Luke as a kindly Force Ghost. Also, Luke's twin sister was not Leia but someone else, a girl called Nellith who was mentioned but never seen, in an obvious Sequel Hook.
The basic story of the original trilogy was intended as a single movie, beginning with the hero's journey to become a Jedi and ending with the defeat of the Empire with the destruction of the Death Star. Realizing how immense that project would be, Lucas opted to not tell the defeat of the Empire in a single movie but keep the destruction of the Death Star (which is why the Death Star II came into play as well as another forest planet being involved). Lucas also coalesced the backstory notes into what became the foundation for the prequel trilogy, deciding that an entire trilogy happened before the original films. In each trilogy, the story grew far beyond the original intention.
Much of this is covered in Michael Kaminski's The Secret History of Star Wars, which painstakingly goes over documentation from the very earliest days of the project to show how Lucas developed and transformed his original vision, especially the idea that Luke's father and Darth Vader were two different people.
According to George Lucas, the whole series was supposed to have a Framing Story with R2-D2, the last surviving member of the main cast, telling an advanced future race about the fall of the Republic and the rise and defeat of the Empire.
Animator Nelson Shin (Who would later become the executive producer of the original Transformers cartoon and found AKOM) was the creator of the famous Lightsaber effect for the first film. Later films have it done in-house at ILM.
Word of God: Lucas long argued that the prequel's story existed in some form or another from the beginning of the saga, as the films featured the subtitles, Episode IV-VI (although the subtitle "Episode IV" wasn't in the first Star Wars film until its 1981 video re-release). A New Hope and a few elements of the original trilogy also make slightly more sense when seen against the backstory in the prequels, though others are more complicated.
There are two major fan organizations of cosplayers - the 501st Legion, aka "Vader's Fist", is composed of people who make and wear the various "villain" costumes. They take letter-number designations, the letters reflecting their costumes - someone who wore a stormtrooper costume would take the prefix "TK", for example. In reaction to the 501st, the Rebel Legion was formed. There is significant overlap between the two, and they're the next thing to professional in keeping standards.
The infamous "Hello Kitty Vader" is actually a photoshop of a 501st member's white Vader.
In Outbound Flight, there is a female Chiss admiral in white whose name is Ar'alani. A few years before the book was written, Zahn met and eventually became friends with a fangirl named Ari Roselani. When they met, Roselani was cosplaying as Mitth'raw'nuruodo (better known as Thrawn), a male Chiss admiral in white.
Noriyoshi Ohrai's poster designs for the promotion of the movies in Japan are so popular that other countries have adopted the same design.