Though it is not yet official, the accessibility of Windows Marketplace for Mobile on WM 6.0 and 6.1 Devices is in rumour these days.
The report is that Owners of WM 6.0 and 6.1 handsets can now access the online app store where previously only people with devices based on v. 6.5 could access the store.
The current scenario where most of the Microsoft programs still run on the earlier editions of the operating system, this new availability will certainly prove to be user-friendly to have actual access to more applications.
If everything falls in its correct place, then activities like- free download of CAB file from XDA-developers, installing the CAB file, and apps like PocketNow will be easily reached.