Not much. I have a runnable demo (at least, it's running on a linux PC - still trying to buy a replacement N900), but it only generates in-application results; I haven't managed to make it talk to X yet, much less hildon. Also I am now working on a word ranking system, as right now it does not rank the words: if you swype "prod", "pod" will be the first result because it just goes alphabetically, even though you did go all the way to the R.