I look forward to finally see them play together, but Petko will most definately be at the olympics, so Julia will play with her there not with Sabine.
Sabine should better play doubles with Kerber regarding the olympics.
(Tough for me, I honestly think Sabine has a better chance against Maria when she plays like she did at the AO than Stosur.... but grrrrrrrr, I want Stosur to go far and become No. 4. This sucks. Well, let's see if they get to the 4th round in the first place... )