Install 4096

Hi,
I want to install 4096 DB on my website.
I have more than 3000 blog on my site.
1. Is it support versin 2.7 ?
2. I wait to comming version 2.7 or now install it on version 2.6 ?
3. I want to install buddypress after installing multi data base on my site. Please regarding to these information help me to install multi data base with buddypress. Please tell me step by step instruction.

best regards.

Jaber