Extra time to code the Windows 3.1 upgrade path?
Yeah, right. Here are the real reasons Windows 98 was delayed:

10. It's a leap year
9. All the programmers are busy working on The House
8. Want to coincide Windows 98 marketing efforts with the '98 Olympics
7. The compiler crashed, had to restart it
6. Not enough paper on hand to print the companion book, "Windows 98 Patches and Fixes"
5. "If we just wait until 2000, we won't have to worry about the millennium bug at all..." 4. Need to erase all the Norton antivirus code that's still in there
3. Not enough disk space on CD-ROMs--need to wait for DVD technology
2. Just discovered Netscape Communicator 4.0 runs perfectly-- need time to correct that
1. "Windows 99" just sounds cooler