A 5Mp pocket camera with an 8X zoom is not currently available that I know of. Since you seem to consider a Canon A95 a pocket camera you can come close.
The Olympus 770 is probably a little more compact than the A95, and might be a tad lighter with batteries installed. It is 10X but only 4Mp.
The Pentax 750Z is smaller than the A95 and might be considered a pocket camera. It has 7Mp but only 5X on the zoom. The Olympus C7000 is about in the same category. It is faster than the 750Z but I like the features better on the Pentax.
They all have full manual exposure modes. Aux lenses would affect pocketability as well as increase the light you need for a good telephoto shot without using a tripod.