The move is evidence that the company wants to go cross-platform, and not stay within its own operating system.
BlackBerrry revenue has taken a tumble while under a third of BlackBerry phones sold last quarter used BB10.
Out of 3.4 million BlackBerrys sold in the fiscal fourth quarter, only 1.1 million ran on the newer BlackBerry 10 OS. Still, the company posted a narrower loss than expected.
After the latest update to BlackBerry 10, users can install Android apps with very little effort.
A RIM exec has high hopes for BB10's app offering, with tens of thousands expected on launch day.
New devices like the Z10 aren't digging the phone-maker out of its financial hole, but analysts say it's too soon to count BlackBerry out.
CEO Thorsten Heins said he wasn't satisfied with the experience.
Only 40 percent of the 6.8 million total BlackBerrys sold in the period run on the next-gen platform. That's a number that most on Wall Street regard as disappointing.
Sideloading popular apps onto your BB10 device is fast and easy.
Rumours say the R10 is a new smart phone with the latest BlackBerry 10 software and a good old-fashioned BlackBerry keyboard.