I'm a member of ABR (the organization doing this dig). Their latest magazine has several articles relating to this dig and the artifacts being found there. In one Dr. Stripling writes "From my reading of I Samuel 3 and two passages in the Mishnah, I knew there was a strong possibility that the Israelites replaced the Mishkan (sacred tent) with a permanent building, but I had no idea if anything remained [or] where on the site..." He goes on to state the the word "temple" used in I Sam. 3 suggests a permanent structure and "doors" and "house" in 3:15 suggest a more solid structure than a tent. Not a proof, but suggestive of a permanent structure.
The Mishnah passages are more plain, speaking of a house of stone with hangings as the resting place of the Ark, and a "sanctuary with stone walls covered by tapestries."
There might be material on their website on this as well: Associates for Biblical Research
Thanks for the info.