Well my mega328P from Fundamental Logic arrived today

I had previously installed the patched V11 IDE they have on their site, so I just swapped chips and fired her up. Seem to work great with blink compiling, downloading and showing "Binary sketch size: 1176 bytes (of a 30720 byte maximum)" Wow room to breath

So a couple of questions:
1. Is there any problems to be aware of in having two versions of the IDE, 11 and 12 installed (in seperate folder) on my Windows XP machine at the same time as long as I only use one version at a time?
2. Has anyone published a complete installable V12 IDE package with the 328P changes yet?
3. Will future versions of the Arduino IDE (V13...) include built in support for the 328P?
Thanks for any responses;
Lefty