If you have a router, you probably have an IEEE 802.11G, which is the latest and greatest stable router standard. The new standard being drafted into existence and propigated by markets is IEEE 802.11N.
Wireless N is actually not a standard yet. It might seem like it is. This morning look at my local Best buy and Circuit City newspaper ads, I noticed that Wireless Routers were selling from $50-150. That’s not bad considering the benefits, but since it’s not even out of Draft yet, I don’t think it’s time to rush out and buy one, even if they’re very tempting!
The two great things about Wireless N are speed and range. You’ll notice right away. If you’re using that G router, you’ll probably be getting about 48-56Mbit/sec. With N, you’ll hit 100Mbit/sec. to 140Mbit/sec. That’s as much or more than physical connection speeds!
Range is a complicated matter because it deals with obstructions of signals and the amount of water particles in the air (probably not). Wireless G had a decent range, and with N, you’ll get about twice that range. However, G allowed you get by with just 1Mbit/sec, N will force you to at least have a 14Mbit/sec connection.
Let me mention again, since nobody seems to believe me yet. Wireless N is still in draft! In 2008/May, they were in Draft 4. I doubt that it’s out of Draft yet, since nobody has publicly said otherwise.