While there are no hard details on when carriers will be launching the new BIS 2.4 there are two new knowledge base articles on BlackBerry.com that explain a few of the new features in BIS 2.4.
The first one: New features in BlackBerry Internet Service 2.4
Automatic login (new BlackBerry Internet Service subscribers only)
New subscribers can create their BlackBerry Internet Service and BlackBerryÂ® Mail 2.4 accounts on their BlackBerry devices without having to create a login user name and password. For more information on Automatic login, see KB13955.
Branded icons for hosted domains
BlackBerry Internet Service 2.4 supports branded mailbox icons for hosted domains on the Homes screen of BlackBerry device. This feature requires that BlackBerryÂ® Device Software 4.2.1 or later be installed on the BlackBerry device and that the organization’s wireless service provider have an existing relationship with Research In Motion.
BlackBerry Internet Service 2.4Â subscribers using aÂ hosted BlackBerry Internet Service email address (for example, <user_name>@<service_provider>.BlackBerry.com) do not have a fixed size restriction on their BlackBerry Internet Service accounts. However, email messages older than 30 daysÂ are automatically deleted from the messaging server (auto-aged) on the 31st day.
For example, during a 30-day period, the BlackBerry Internet Service subscriber may receive an unlimited number of email messages that may total 100MB but, on the 31st day, messages older then 30 days are automatically deleted. This prevents BlackBerry Internet Service accounts from becoming full and the BlackBerry Internet ServiceÂ subscriber fromÂ receiving a mailbox quota-limit email message.
This is by design andÂ does not apply to third-party email accounts integrated into the BlackBerry Internet Service account.
Thanks to MiBlackBerry for the tip