Comment 22 for bug 137872

According to the fact that debian has 0.4.1-2 in unstable and that they are on freeze, and since jaunty FeatureFreeze is tomorrow, that's a really good question. Ubuntu would have to break more than 2 years of merge from debian only for ext4 support.

At the same time, at the condition that it does not introduce important bugs, having the ability to install with ext4 but not to partition ext4 is not really polished and might be a good reason to consider it, though it's not really dramatic compared to serious filesystem issues (if such bugs exist in current gparted for ext4).