Microsoft Corp’s Professional Developers Conference in Denver, Colorado next month will see the introduction of a new version of Windows CE code-named Jupiter, and designed for a new form factor between palm-sized PCs and notebooks. The new version, set to emerge on October 12, will be the basis for a new brand of so- called PC companions. Major manufacturers such as Compaq Computer Corp, LG Electronics Co, Sharp Corp, IBM Corp and Hewlett-Packard Co are expected to support the launch. The systems, which aren’t expected to use Pentium chips, won’t operate as smaller versions of full-scale PCs, and will have a longer battery life than traditional notebooks. They are expected to weigh around two pounds and cost under $1,000.