Is there going to be a fifth season of Curb Your Enthusiasm?  If there
is going to be a fifth season of Curb your Enthusiasm, when will it
start filming and
when will it premiere on HBO?

Hello asmucc

Indeed there will be a fifth season for Curb Your Enthusiasm.

According to this June 2nd Reuters article, they will begin filming in the fall.
http://www.reuters.com/newsArticle.jhtml?type=televisionNews&storyID=5318403

Unfortunately, no air date has yet been set. However, to try to get a
rough idea of when the fifth season premiere is likely to be shown, I
went to HBO's Curb section and checked out the air dates for all of
the past season premieres.
http://www.hbo.com/larrydavid/episode/season1/episode01.html

Series premiere: October 15, 2000
2nd season premiere: September 23, 2001
3rd season premiere: September 15, 2002
4th season premiere: January 4, 2004

Since they begin filming in the fall, I would say that it's likely
that the new season will start closer to the beginning of next year,
as was the case for the last season.

I'm very sorry I couldn't give you an exact date. Hopefully sometime
soon HBO will give us a better idea of when they're planning on
starting things up.

If you need more information or if you find this answer unacceptable
for any reason, please do request a clarification.

Very good research Thanks