I didn't get that email. Maybe they know I'm running XP...
I would presume not. Windows XP has been officially discontinued, as it is 13 years old now. Hence new software doesn't support it anymore.
I am a software developer, and my products install and run on XP just fine. Vista, too. That's because I make a point of maintaining compatibility across many Windows versions.
Because my applications interact with Microsoft Office, I also have to maintain compatibility with multiple versions of Office, and let me tell you that's a royal PIA! But I do it because the alternative is telling a customer I can no longer take his money.
Seriously, losing XP-compatibility usually has one of two causes: the developer is too lazy and/or too cheap to keep an XP machine around for testing, or they are coerced by Microsoft in order to keep their Windows logo certification.
In the business world, XP still has a huge user base, many times bigger than Windows 8. Advice to periodically replace the O/S with a newer version usually comes from users who have no non-trivial applications they depend on. If they did, they'd know that upgrading the O/S can be vastly more complicated than just sticking in a DVD.