To be honest, I'm looking forward to playing around with a friend's BB10 dev unit next month. Although a significant portion of the functionality seems to mimic that of Android and iOS, if RIM can take their original advantages and strengths and apply them to the typical strategies/desires of modern touch-optimized mobile operating systems they'll have a winner.
Not that they can win back all the corporate environments that have embraced iOS and Android. Informatics departments have shifted from embracing a platform to embracing a unified method of data control. Rather than embracing BlackBerry, they are now more platform-agnostic; they embrace a method of data control and synchronization while allowing multiple end-user access methods (platforms; iOS and the like). The end result is that while BB10 will almost certainly be supported, it will be fighting uphill against iOS, Android, and WP8's (ha) increasing corporate-level momentum.
Sit back, grab some popcorn, and tune in to the smartphone channel. There's a new (old?) player in the ring.