We are finishing the compiler support for the VO an Vulcan dialect at this moment and will work on the runtime (including the macro compiler) after that.
As part of the runtime we will create RDDs, and what I can promise is that we will also include an Advantage RDD. We will use the ACE API to talk with ADS. The RDD will be very much like the Advantage RDDs from Sybase (SAP).
I am not sure about the time frame for all of this.
What I can say is that we have already started with the RDD system, but the RDD system depends on the macro compiler, and we have not started with this compiler yet.
I expect that the Macro compiler will be relatively easy to implement, because it will share most of its code with the normal compiler, but it will not be a one day job.
XSharp Development Team
As Karl said, BYOR stands for Bring Your Own Runtime, you can find more info about this concept in the FAQ section and previous announcements in this website. Every ADS rdd dll that has been released for vulcan in the past was built against a certain version of the vulcan runtime and according to BYOR, if you have a license for that runtime, you can already use that ADS rdd from x#, too.
Some months later x# will include its own runtime and at that time the x# specific version of the ADS rdd will be using the x# runtime dlls instead.