In case you didn't know already, Microsoft will be dropping support for Windows XP (SP3) and Office 2003 on April 8, 2014. From this date onwards, Microsoft will no longer provide new security updates, non-security hotfixes, free or paid assisted support options or online technical content updates.
As such, use of Windows XP after this date (on non-isolated systems) is strongly discouraged. Indeed, to encourage PC owners to upgrade from Windows XP Microsoft will be presenting an official notification on the desktop of those Windows XP customers who are using the Home or Professional editions and who have elected to receive updates via Windows Update.
The notification will look like this:
Note: this is a genuine notification and not a symptom of malware (which often uses similar looking prompts to entice a user to download further malicious software. (source)
Microsoft have also partnered with Laplink to provide Windows XP users with a free data migration tool called PCmover Express. This tool for Windows XP will copy over your files and settings from your Windows XP PC to a new device running Windows 7, Windows 8 or Windows 8.1. It will be available for download from windowsxp.com soon.