> 
> If I want to write my own hard disk driver ( for LSI SAS ), is my only option 
> to wait for 01Q8 for the block filesystem stuff to be released on foundry 27.

In general yes due to the size of the source required for release.  However, it should be possible to get some of the 
applicable source in the 'old fashioned' way by contacting your sales rep directly and going the NDA route.

Hope this helps,
 Thomas