wine users - Jun 2010 - wine testing repo question

I can't find info on this at my distro site, hopefully someone here knows.

In order to get newer versions of wine than my distro regular repositories 
offer I am looking to add the Fedora updates-testing repo and grab wine from 
that. Before doing so I had a couple questions I couldn't find answers to on
the wiki:

Will upgrading wine from the testing repo erase the programs I have installed 
in wine now or will they still be there the way they are when updating through 
regular repositories?

Will using this repo always grab whatever the most current version in the 
repository is, or is there a way I can specify a version I want to test, for 
example if I want to test 1.2rc2, but 1.2rc3 is available?

currently using wine 1.1.38
Fedora13
nVidia 6150SE, driver 195.36.24

The programs will stay, they're in $HOME/.wine and your package manager of
choice doesn't touch that dir.

As for versions, depends on how Fedora itself works, I guess (I'm not
running Fedora). If they allow you to revert to older packages, you probably
could. I think it'll just take the latest, though.