I don't think they have been very quiet about ART. They had a whole I/O session and they recently dedicated a whole dev backstage podcast to ART and its future

I don't think they have been very quiet about ART. They had a whole I/O session and they recently dedicated a whole dev backstage podcast to ART and its future evolution (btw, some nice things are planned : suppression of the 65k limit, code hot-swap, ...).