Have you been thinking about moving your existing Windows PC to the new Windows 8? Microsoft is giving you an incentive to do it by the end of the month.

The company, which has been offering upgrades to Windows 8 Pro for $39.99 since launch, says the upgrade price will rise to $199.99 for Windows 8 Pro and $119.99 for Windows 8 starting in February.

The decision to end the promotional pricing isn’t a surprise, and it could cause an increase in Windows 8 upgrade sales over the next week. However, the big question is what happens after that. We know from a variety of data sources that Windows 8 isn’t exactly setting the world on fire, and Microsoft is running the risk that the higher pricing could decrease demand.

Microsoft reports quarterly earnings on Thursday afternoon, and Windows 8 adoption will no doubt be a hot topic on the company’s earnings call.

If you miss the Windows 8 upgrade deadline, here’s a Microsoft chart breaking down the differences between Windows 8 and Windows 8 Pro to help your decision on which version to buy.

Like what you're reading? Subscribe to GeekWire's free newsletters to catch every headline

Job Listings on GeekWork

Find more jobs on GeekWork. Employers, post a job here.