I don't have an answer for you, but I am going through the same thing, but homeschooling has done wonders for my child since I pulled her out of public school.  I just diagnosed her.  Anyway, I hope you find the best curriculum for it, and I hope the same for myself as I search for the best for my daughter.  I heard great things about sonlight. :)

From my own experience, there isn't just one program that works.  You will need to do a combination of a few different programs.  In language arts I highly recommend using an Orton-Gillingham based program.  There are lots on the market now.  Susan Barton has a homeschooling program, there is S.P.I.R.E., Recipe for Reading are a good start in your research.  You will need to do Orton-Gillingham lessons at least one hour every day.  Then for math, I really like Saxon Math.  They have a great homeschooling program.  It is very systematic, cumulative and structured.  They also have an on-line test you can take to place your child in the correct level.  Those are your two most important subjects right now.  The science and social studies can be extremely hands-on by going to the beach, aquariums, museums, nature hikes and centers, missions, etc.  
Good luck to you and have fun.  For more information regarding Orton-Gillingham, click on the link below:

Well, I am now in a similar boat with you since my son's private school closed and am looking for curriculum for my son.  I used to use Calvert School Curriculum years ago for him and his older 2 brothers. (at the time the boys were k-5th...now they are 7th-12th) Calvert is a great time tested school established in 1906!!  I like their thoroughness and they send you EVERYTHING you need.  It is very "newbie" friendly and even has a lot of extra support from professionals, some of which is included and some for an extra fee.  At that time, the curriculum didn't serve my dyslexic son well (and we didn't know he had dyslexia) but they have now developed a curriculum that uses Orton-Gillingham methods.  It looks awesome and I am excited to start home schooling him again!!  They use many resources for kids with learning disabilities....like programs that can read anything to your student so they have the chance to work independently.

This is best I have come up with so far.
I will keep you posted of anything else and hope you do the same!

The correct response to dyslexia is almost always to REMEDIATE, not to cripple the child for life by just skipping reading.

Except for exceptionally rare cases, dyslexics can become not only adequate but gifted readers.  They just need more instruction--and more grounding in phonics.  I am dyslexic--dyslexic enough that I struggle to spell the name of the street on which I live after three years, and I still can't reliably spell words like "field."  Yet I got an 800 on the English portion of the SAT and am a published author of 6 novels in 8 languages.  My son is seven and is dyslexic.  However, he is now reading on a seventh grade level.

Begin by reading through the dyslexia and reading portions of donpotter.net for background.

I strongly recommend Pollard's Synthetic Readers for teaching reading to a struggling child.  Begin with the Primer, and read the teacher's manual so that you understand how to use the program.  You can find all of Pollard's Readers (Primer, First Synthetic Reader, Second Synthetic Reader, Third Synthetic Reader, and the Advanced Reader) online in Google Books.  The Spellers (Synthetic Speller and Advanced Speller) that go along with them are invaluable.

DO NOT give up on your son's reading.  A diagnosis is NOT a destiny.