Our brief hands-on experience with the new OS left a positive impression. We expect that RIM will be able to compete in this area with the other main players. The hardware used in the new phones isn't ground-breaking, but that doesn't necessarily mean that the new BlackBerry phones will have subpar performance as long as the new OS is optimised well. It's a good move that both full-touch models and phones with the trademark physical keyboard will appear. Whether or not BlackBerry 10 will become the success RIM needs it to be, and take back some of the market share from Android and iOS, that remains to be seen. It will take some time before that question can be answered, because it depends on whether the entire ecosystem matures and is accepted by the mainstream.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips