CUSA offers locking mode dial for 7D
 

$100 upgrade available for the 7D, replaces its
mode dial with a locking one similar to the 60D.

See details at:

Canon U.S.A. : Consumer & Home Office : EOS 7D

So will this now be a new feature on the 7d and 5d? Im in the market to buy one of these models. Wondering if this will now come standard?

I'll have to check with CUSA, but I'm pretty sure this is going
to remain an individually elected modification per each end-user.
In other words, I don't think they'll change the current production
line -- but I'll try to find out for sure.