If you've been bugging your corporate IT department for a new laptop, try to hold off a few more days before making the final push, because Lenovo is set to upgrade its Z-series line of ThinkPad notebooks with dual-core processor options on Tuesday. Both the 14.1-inch Z60t and 15.4-inch Z60m
will be bumped to the Z61t and Z61m, respectively, and offer three varieties of Core Duo procs (maxing out at the 2.0GHz T2500) or two flavors each of the Core Solo or Celeron M chips. All the other specs on both models seem to remain unchanged: you still get WXGA widescreen displays (at the minimum), integrated graphics (along with the option of upgrading to ATI Radeon cards in the m), 256MB of RAM to start, your choice of hard drive capacities and speeds, all three 802.11 standards, optional Bluetooth, and of course, the option of built-in EV-DO which have made the Z-series so popular. No word yet on exact pricing for these new models, but you can expect them to start around the same price points as the Z60 models did when they were first released.