The other one is a 35-100. Pansonic haven't revealed the maximum aperture except to say that they will be 'bright'. (Sorry, can't find the link to the original report).
These two correspond to the traditional 24-70 and 70-200 zooms on FF which I imagine has given rise to the speculation that they will both be 2.8. I'm more inclined to think that the former could well be 2.8 and the latter perhaps 4.
The mack ups presented by Panny don't look like they have the power zoom feature and they weren't described as such so I'm hoping they won't, but from the presentation it seems that these are still at an early stag of development so presumably a lot could change.
If the 12-35 is indeed a good quality f2.8 it could certainly tempt me to jump ship. This lens, the Oly 12 and the Panny 25 would cover just about everything I could ever want. Let's see what Sony can deliver with their promised high quality G standard zoom.
Isn't competition great?