I don't think so.
Well, if it's an Anime sequel that you're looking for, the answer is probably no. In an interview Cowboy Bebop director Shinichiro Watanabe expressed his belief that they should quit while they are ahead, "It's more in keeping with the Bebop spirit."
Furthermore, in another interview, published in Asahi Shinbun (Japanese), with Watanabe and music director Sugano, it was stated that "Watanabe stated that he was not willing to make a new series, because the taste of BeBop lies in the sadness (heart-rending sorrow) that things have to come to an end (Owatte shimau koto no setsunasa). He is afraid that if he continues making new series, the work would be dull. So, he thinks it rather 'kakkoii' (cool) to end the title here."http://www.animenewsnetwork.com/news/2001-10-03/more-cowboy-bebop-anime