i read on Wikipedia that Ewan, Ian and Jimmy Smits all expressed interest in the project, and Daniel logan i think has been called back to reprise his role as Boba Fett - yet nothing set in concrete, although all of this was listed under the facts according to Wiki
Facts
Pre-production was expected to begin in January 2006. Whether it has or not has not been confirmed.
In a recent interview, Steve Sansweet stated that the series will be released "towards the end of the decade." He gave the time period until release to be "about 3 years." Although the exact time of release is rather ambiguous at this point, fans expect the release to be around 2008.
The series will focus on minor characters in the Star Wars films, ones who viewers have seen on screen before in the films themselves.
The entire series will be set in the 19-year time period between Revenge of the Sith and A New Hope.
The series will last 100 episodes at 1 hour per episode.
Daniel Logan, who played the Young Boba Fett, has been asked to reprise his role as Fett for the new series by Lucas.
Lucas will produce the show with his work for the first season, and then "hand it off from there."
The style of the series will be in a similar style to Lucas' Young Indiana Jones TV series.
Cameos by main characters are not totally out of the question.
The show is still in its early planning stages, so many plot and/or story elements may change, as Lucas has shown to change his mind easily, such as expressing an interest in expanding the character Aayla Secura, then killing her in Episode III.
According to Lucas at Celebration II, in the series, "a lot of the issues from the films are connected, but you won't necessarily see a lot of the people that are connected."
Lucas has stated that, in producing the show, "we will do what would typically cost $20 million, for $1 million."
Lucas has stated that if this series, along with the 3-D animated Clone Wars series is successful, more series may follow. According to an interview at his AFI lifetime achievement ceremony, future series may include the possibility of a Knights of the Old Republic-era series.
Frank Oz (Yoda), Ian McDiarmid (Palpatine), Jimmy Smits (Bail Organa), Ewan McGregor (Obi-Wan Kenobi) and Temuera Morrison (Jango Fett/clonetroopers) have expressed their interest in occasional appearances.
The series will be shot using Hi-Definition cameras, according to Rick McCallum at a recent press conference for the Revenge of the Sith DVD.
McCallum also confirms at the conference that many characters from the Expanded Universe will be seen in the series, who had previously only been seen in the novels, comics, video games, and other media.
McCallum describes the series as: "It is going to be much darker, grittier. It's much more character-based."
McCallum says on the writing and plot of the series: "We are just starting to interview writers and trying to really figure out which direction to go to. He envisions somewhere like 100 hours between Episode III and Episode IV with a lot of characters that we haven't met that have been developed in some of the novels and other things. We are really excited about that. Finally, we could have the opportunity to answer everybody's questions once and for all by the time we finish the series."
Only one major Rebel victory will occur in the series, per the opening crawl of A New Hope. However, it is possible that the Rebels may win minor victories.