Not enough. Uninvolved bystanders are not going to follow each git commit a project makes. They want a somewhat stable checkpoint to look at, be it tarballs or git tags (which can also count as a release).
Until this announcement, for uninvolved bystanders the current release of Hurd was 0.2. Not some random version control commit.
A lot of people are going to take a new look at Hurd now that there is a new release.
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