You know, there was a time when being in 'stealth' mode was because you were so cool that you needed some time to get ready before you started taking on customers. Now its a proxy for 'we are filing a bunch of patents, hang on'

The problem of course is that 'stealth' mode can lead to 'designed in a vacuum' mode which means you don't get the benefit of people making observations that in hindsight are obvious.