The same card can often be used to connect both in the office and while travelling. Laptop PCs have also become more commonplace, with many people now using one as their main computer. CD technology has improved to the point where many docking stations no longer bother with an external keyboard or monitor, and the faster processors of desktops are only needed for the most demanding applications. The one thing that still ties them to a desk is the network. A wireless LAN can set them free, also opening up the possibility of ad-hoc networking between any two or more PCs.
Standards are another important issue.
The most successful is IEEE 802.11b, but HomeRF and Bluetoooth want to use the same airwaves. If the thousands of vendors who say they will support it are to be believed, it will eventually be built into almost every electronic device.