The “switcher’s” Mac hasn’t done so well in sales, but it seems that somebody in Cupertino thinks that at least having a low-cost Mac brings people into Apple Stores and thus the little Mac is going to get a refresh instead of the axe:“Among the improvements destined for the new lineup are 45-nanometer Core 2 Duo mobile chips starting at 2.1GHz with 3MB of shared L2 cache, an 800MHz front-side bus (up from 667MHz), and a step up to the same Intel GMA X3100 integrated graphics processor employed by the existing