it will probably be announced within the next few weeks. I believe the last step everyone is waiting on is for MLB to approve the deal. That is probably expected within next 2 weeks.
I believe 694 will be the new FS San Diego channel when it's announced.
I think the new TV deal is already approved. The holdup is that the new ownership hasn't been officially approved by MLB. But nonetheless, an official announcement should be made on (or around) March 5.