Does anyone know if a sequel is being made or when it's coming out? I'm assuming the sequel will focus on shippuden but even if that's true I hope there are more characters available to play from the first series. Another thing I'm wondering is does anyone know when the English version of shippuden is starting because it's getting annoying hearing about it when it's not in English yet and they're still eight or nine episodes that haven't been shown from the first series.
I do believe the sequel to storms is being created now, and will feature part 2 of the series the shippuuden arc. Going by the sequence of which these games are released, the sequel should be released sometime next year, or make an early year release in 2011. Nuns took 2 years to develop, and was released the following year in November 2008(which is unusual, because most naruto games on the playstation franchise are released in march-august, but since this was a newer console, development is different).
About your second question, all we know is that the English voices for the first arc in the shippuuden series have been completed. No official premiere has been announced, but again the voices for the first arc -which is about 1-25 episodes has been completed.
Here are some anime news links about English version: