I've just installed the old 0.9.0-rc1 build from last December, and it runs on my Sl4. There're few problems, tho. Touch screen is not quite accurate, and I can't get any sound. The battery indicator seems to have a wrong window size - from all three digits it only seem to display first two, i.e. "10" instead of "100" percent. These are just ones that you'll notice right away. There're also a bunch of errors reported in logs which probably indicate some other problems. I'll try to set up a toolchain and build my own image sometime in next few days (time permitting).
-albertr