What is the point of having a 6.3 release? If it is just bugfixes for 6.2 without any added features then wouldn't it be better to concentrate on getting 6.5 released?
Some people already have products based on 6.2 and a bug fix release would be a major help to them. I think it was a good choice by the devs to continue supporting their existing product. Besides, it's just a release of what sylv has been fixing to 6.2 over the years... it's already complete.