As JoachimSchipper said, provide a timeline and mark release dates of Os versions on it as well. This way it would be much cleaner and gives more context.
I actually had letters on there ("E", "F") etc for releases but on top of the sales windows & the support windows it was just too much on one chart.
I do plan to provide all that information as a comprehensive list of phones/updates, ideally along with the ability to sort by carrier, manufacturer, etc.
I do plan to provide all that information as a comprehensive list of phones/updates, ideally along with the ability to sort by carrier, manufacturer, etc.