BB10 is QNX, which RIM acquired 2 years ago. They were ready to ship QNX when they were bought, so the 2 year delay is just evidence of RIM's inability to ship on time.
Sad to see what was such a giant misstep so badly and so consistently. :(
I've no idea where you're getting that but when they QNX was not ready to ship anything on mobile back then. They've been building the whole ecosystem around the core QNX system.
What does that mean? QNX is an RTOS meant for embedded devices. They were already shipping and still shipping QNX for medical devices etc.