The next version of Bluetooth has already arrived in many of my Indianapolis small business computer outsourcing customers' offices. It came in on the smartphones in their pockets. The Motorola Droid Razrs and the iPhone 4Ss are Bluetooth 4.0 Ready. For the most part, no one noticed because they are compatible with the Bluetooth 2 and 3 standards. But soon you will have accessories that use the new 4.0 standard, and that's when you'll have to decide if you replace your current accessories. The decision is easy if your favorite accessory is running the Bluetooth 2.1 standard. An upgrade will make the device so much faster for whatever you do with it. For the 3.0 devices, it's a harder call. The data speeds aren't any faster in 4.0, however, the power consumption is considerably less. Your headset will last longer before requiring a charge, for instance.
I hate it when my wireless keyboard or mouse runs out of battery. The only indication I get is that suddenly it doesn't work. Inevitably I spend a few minutes trying to make it work before getting new batteries. Imagine having them work for their useful lifetime on a single set of batteries? It's possible with 4.0. Pairing devices will be easier too. I've not found it all that difficult but I frequently have even people inside my Indianapolis Information Technology support services company complain about the task.
If you're buying new devices or accessories, check to see if they have the new standard. They will have one of these logos: