No. I sideloaded four droid apps from goodereader.com today and I updated to the new OS.
By the way, it is pretty awesome that we can actually do this. I gotta give credit to RIM for having created a device that is capable or running two OS apps.
ARE YOU JOKING?! I know you're new but come on, use the search bar!
There are many thread on this!
Here is you're answer they clarified that they never actually were blocking side-loading. Side-loading and Piracy, By Alec Saunders | BlackBerry Developer Blog
Next time, please use the search bar before making a new thread.
Thanks, .