We're starting to see some information about the new Microsoft System Center Mobile Device Manager 2008, announced last week at CTIA.
Here is Microsoft's official product homepage, and here is a brief overview describing how it will all work.
We are also starting to see device manufacturers announce support, including HP and Intermec.
It's still unclear whether this product will be useful for small and medium size companies, or just larger enterprises. It's also not clear whether this is targeted primarily at Smartphone users, or if it will be useful for Data Collection devices inside a business.