The FIPS 140-2 standard determines whether 'cryptographic modules' (e.g. an OS), are sufficiently safe for use by government agencies. This security, shared by all BlackBerry models, is what has made RIM a major player in the corporate market. While other operating systems have become more app-centric and user-friendly, RIM can still boast the tightest security.
But rivals like iOS and Android are increasingly being adopted by corporate clientele. If RIM is going to play up their security, they might first have to discredit that of iOS and Android. BlackBerry 6 is a terrific evolution of the OS, but they need to offer it (officially) on more devices. They currently only have three models running BB 6: the Torch 9800, the Bold 9780, and the Style 9670.
source: CIO via BoyGeniusReport