After firmware update to version 10 the elevation is higher now. We did an 80 mile ride today that had 5700 ft and my Garmin 1030 showed 7600 ft. All other rides show more elevation now. Is there a fix coming out for this?

Are you on v 10.0 or 10.20? Forum has lots of same reports, supposedly fixed in 10.2. Take a look before posting.

Yes 10.20 specifically fixed that issue with elevation.

but before this update my edge always showed less elevation.. I hope that they also would fix that..

I still have to test this latest update,  but with the oldest version, before 10, my garmin always showed less elevation,  I hope they would also fix that issue..  when I started a climb with no descent,  for ex from 900 mt elevation to 1850 mt,  my garmin didn't show 950 mt but only 900, and that's really a nuisance.. 

You must understand that the Edge calculates elevation variation using a barometer, not al true altimeter. So it really measure atmospheric pressure and convert that to an equivalent altitude change using the pressure at the start of the ride as the reference. But if during the ride the weather changes and the atmospheric pressure varies somewhat this will show as an erroneous variation of altitude in your ride. That is one reason why when you ride a loop the total ascend and descent are never equal - they are close but not equal. So my point is that you should not expect an absolute precision from a barometer-based measure. Getting 900m instead of 950m on one ride is pretty fine in my view. 

Martin868 said:

using a barometer, not al true altimeter

An altimeter (usually) is a barometer (that is, they both measure air pressure).

There are other kinds of altimeters but they are unusual. GPS can be used but it's consider a poor choice (worse than a barometer).

thanks for the reply, I understand, I thought that it could use an average data between the two, GPS and barometer,but I Was not sure about that.