Software is never 'finished', there is always room for improvement and bugs to fix. CuteEditor is reasonably stable in 98% of scenarios. If Adam decided that was it, and not to release any more updates he'd quickly loose customers.

 

If you are currently using 5.3 then this is already a worthwhile upgrade, there are a lot of improvements, and the bugs there are would likely to already be in previous versions anyway.

 

Thanks,

Ady