RIM has always focused on enterprise, and with BlackBerry 10, they are just renewing that commitment. From BlackBerry Balance to the built in productivity software, BlackBerry 10 is built for businesses. RIM has also made adding corporate accounts, including email, contacts, and calendars, easier with BlackBerry 10. RIM has highlighted the improvements in a quick demo video, which can be seen above.
Source : Inside BlackBerry for Business Blog