I finally got my hands on these new batteries via ebay Ebay Link $105 each battery. Amazon is also now selling these individual battery's. Amazon Price $120.
When I tried it on my Bosch IDH182 impact driver the power difference very noticeable when comparing to 6.0 amp which is really amazing. The only downside is the 6.3 ah won't fit the 18v vacuum and doesn't lock in when connected to the 18v Circle Saw (although it fits well enough to power on and is actually rather snug). If I shave a very small amount of plastic off the circles saw it should snap in (Update-Bosch has indicated that if the Circle Saw does not fit you can have a Bosch Service Center make a simple modification to accommodate the footprint of the CORE18V battery). The battery fits all the drills/drivers, planner, recip saw, rotary hammer, and bandsaw that I have. Can't wait to actually use it with the planner as it felt really powerful when giving it a test.
Bosch must be developing bigger and more powerful tools for these new batteries that can use them to there full potential. (if anyone has some inside info I'd love to hear it)
I believe the belief was that it didn't matter what the amp of the battery was the tool would perform the same. This is 100% not the case.