Dell's budget-priced Inspiron 11z ultraportable looked pretty good on paper when it came out in August, although subsequent reviews criticized the touchpad and longevity with the three-cell battery. That hasn't stopped Dell from adding options to the system, though.
According to a post on the Direct2Dell blog, the Inspiron 11z can now be configured with a dual-core processor, more storage and RAM, and a bigger battery.
The order button seems to have mysteriously disappeared from the Inspiron 11z page on Dell's main website, but the Tech Specs section indeed mentions a dual-core Pentium SU4100 processor with a 1.3GHz clock speed, 800MHz front-side bus, and 2MB of cache. Users should also be able to spring for 4GB of RAM, 320GB of 5,400-RPM storage, and a six-cell battery... once that order button shows up again.
Last we checked, the Inspiron 11z still started at $399 with a single-core Celeron processor, two gigs of RAM, a three-cell battery, and Vista Home Premium with a free Windows 7 upgrade. You'll presumably need to go above that for the dual-core Pentium and the other goodies, though. (Thanks to Engadget for the tip.)