According to official data of RIM, must soon come to market these new products - software 7.0. version - BlackBerry OS, a new phone that called BlackBerry 9900 Bold, and of course improved BIS 4.0.
BIS changes:

• improved Google-calendar
• changes of some algorithms encryption protocol
• optimized system for automatic login
• adding languages: Hindi and Vietnamese
• evidence of association with Windows live is no longer required
• changes in the work with "secret questions"

original: http://www.blackberry.ua/2011/05/obnovlenie-bis-dlya-telefonov-blackberry