I've just tried the demos coming with 2.1 rc2 on a PlayBook and on a BB10 device.

PlayBook
Most demos don't load (from a URL). They work fine when loaded on a Nexus 7.
Is this just a problem with the demos or has support for RIM's tablet been dropped?

BB10
ST makes the browser crash (not your fault).
After looking at the themes/css folders, I can't see the promised BB10 theme.
Will it be released with 2.1 or has this been postponed?