Mid range tower: Dual or quad core, mid to high power requirements (65-130ish Watts) Conroe/Kentsfield compatible chipset. This means very fast bus speeds, and a few extremely fast cores 2x 3.2Ghz or 4x 2.67Ghz. Very cheap parts. If I remember, a 2.4Ghz Conroe is roughly half the cost of a 2.33Ghz Merom. Cheaper CPU, RAM, motherboard, etc than either Merom or Woodie compatible chipsets.
So... Mid range mac would be cheap. Very cheap. Much cheaper than an iMac, which should enable Apple to put in a better CPU, and would also enable the use of a really decent graphics card. If the rumours are true, and Apple will use their custom cooled X2800XTX GPUs, there would be every likelyhood one (or two, as the rumour also states) would find its way into a mini tower. Personally, I still think we will have to wait at least until Penryn to see the mini tower, if not Nehalem.
And the headless Mac rumors never die...incredible...
Going a bit off-topic...am I the only one who thinks those Intel MOBO/chip codenames are simply ridiculous? Yonah, Merom, Clovertown, Penryn and now what...Nehalem? What's next? Noah? Chanukkah? Bah...