The BlackBerry BIS 2.7 upgrade will occur overnight on 6/26-6/27. Customers will not have access to BIS services during the four hour upgrade period. The upgrade is scheduled for Pacific Time: 6/26 11 PM- 6/27 3 AM
New features in BlackBerry Internet Service 2.7
This BIS 2.7 upgrade is for all of the US, Canada, and the Americas.
Other RIM regions of Europe Africa Middle East, and the Asia Pacific areas have upgraded this month.
*Thanks to ealvnv for the info*