That's right, while RIM is finally
adding native email support to the PlayBook, it may not be adding BES or BIS support.
Not exact matches
As can be seen in the screenshot above, that rewrite is ongoing and as such, it looks like the next major tablet OS build will not
support BES
email despite finally
adding native support for Exchange, IMAP and POP.
Microsoft also announced some new business features
added to Windows Phone 8.1, including
native support for enterprise VPN and the ability to write and send encrypted
emails through their devices.