Luke's is owned by the same proprietor as Water Tower Kitchen in Campbell and the former Blush Raw Bar at the San Pedro Square Market. The vision for Luke's is that it will be kid-friendly on the ground floor and be an ideal date-night spot for adults on the upper terrace.
The menu will be California cuisine with local ingredients. The rooftop beer garden will have 18-20 rotating beers on tap.
With San Jose's awesome weather, it's surprising that more restaurants have not opted to build rooftop terraces. The only other one I can think of that is coming is Eox & Nyx in Downtown San Jose. Willow Glen is especially well suited for this since you have a single beautiful street where all the restaurants and businesses are concentrated.
Luke's should be coming in a year or so. The address is 1093 Minnesota Ave (next to the Starbucks) and it will be a significant improvement to the area as you can see from the images below.