I'm interested in this, I would like to think this is case... But I'm curious what forensics you think they are analyzing? I have had a similar thought, but I can't think what evidence they would have besides digital evidence and data dumps from search warrants. I considered touch DNA but can't think of a likely source for that DNA unless they have collected physical evidence that has gone under the radar... And there are only a few sources I can think that they would have obtained that.
*Biological evidence (blood, body fluids, hair, other tissue). I haven't heard of anything found in the home, but perhaps other locations.
*Latent print evidence (fingerprints, palm prints, footprints). Apparently it rained that night or the next morning? Regardless, I bet they got a footprint. Betcha.
*Tire tracks (same as above)
*Trace evidence (fibers, soil, vegetation, glass fragments). I'd be checking that car wash very carefully for trace evidence.
*Digital evidence (cell phone, internet logs, email messages). I'm sure LE is already all over this
*Tool and tool mark evidence - I haven't heard of any disturbance around the home, but we don't know. Any tools found throw in to the bushes.
*Drug evidence - Any paraphernalia, or liquor bottles for that matter
*Firearm, taser, knife thrown in bushes, off side of road, etc.
That's my short list.